Labrie, Ross. The Art of Thomas Merton. Fort Worth, Texas: Texas Christian University Press, 1979.
Lacombe, Olivier. Chemins de l'Inde et Philosophie Chrétienne. Paris: Alsatia, 1956.
Lacombe, Olivier. Existence de l'Homme. Paris: Desclée de Brouwer, 1951.
Lacombe, Olivier. Gandhi ou la Force de l'Ame. Paris: Librairie Plon, 1964.
Lacombe, Olivier. L'Absolu selon le Védânta: Les Notions de Brahman et d'Atman dans les Systèmes de Cankara et Râmânoudja. Paris: Librairie Orientaliste Paul Geuthner, 1937.
Lacombe, Olivier. Les Grandes Thèses de Ramanuja. Paris: Librairie d'Amérique et d'Orient, 1938.
Lacroix, Jean. Marxisme, Existentialisme, Personnalisme: Présence de l'Éternité dans le Temps. Paris: Presses Universitaires de France, 1971.
Lacy, Donald Charles. Collected Works. Franklin, TN: Providence House, 2001.
Ladd, Rosalind Ekman, ed. Readings in the Problems of Ethics. New York: Scribner, 1965.
Ladner, Gerhart B. The Idea of Reform: Its Impact on Christian Thought and Action in the Age of the Fathers. Cambridge, Mass.: Harvard University Press, 1959.
La Farge, John, S.J. The Catholic Viewpoint on Race Relations. Garden City, N.Y.: Hanover House, 1956.
Lafont, Ghislain. God, Time, and Being. Petersham, Mass.: Saint Bede's Publications, 1986.
Lafrance, Yvon. La Théorie Platonicienne de la Doxa. Montreal: Bellarmin, 1981.
Lagrange, M. J. Saint Paul Épitre aux Galates. Paris: Librairie Victor Lecoffre, 1926.
La Guma, Alex. Apartheid: a Collection of Writings on South African Racism by Soiuth Africans. New York: International Publishers, 1971.
Laing, Matthew R. Logology: a Study concerning the Nature and Function of Language. (Commentary on a secred hexameter message contained in the fragments of Parmenides, written by Laing about 1940 and published now by McGinley). Scranton, PA: John McGinley, 1973.
Laird, John. Recent Philosophy. London: T. Butterworth, 1936.
Lallemant, Louis, Father. The Spiritual Doctrine of Father Louis Lallemant, of the Company of Jesus, preceded by Some Account of His Life. London: Burns, Oates and Co., 1870.
Lamb, George, translator. Tolerance and the Catholic: A Symposium. New York: Sheed and Ward, 1955.
Lambertino, Antonio. Max Scheler: Fondazione Fenomenologica dell'Etica dei Valori. Scandicci (Firenze): La Nuova Italia, 1996.
Lambertino, Antonio. Valore e Piacere: Itinerari Teoretici. Vita e Pensiero, 2001.
Lamberto de Echeverria. Presentacion de la Universidad de Salamanca. Salmanca: Europa Artes GrÔficas, 1984.
Lami, Di Alessandro. I Presocratici: Testimonianze e Frammenti da Talete a Empedocle. Milano: Biblioteca Universale Rizzoli, 2000.
Lamont, W. D. The Principles of Moral Judgement. Oxford: Clarendon Press, 1946.
Lampert, Laurence. Nietzsche's Teaching: An Interpretation of Thus Spoke Zarathustra. New Haven, Conn.: Yale University Press, 1986.
Landesman, Charles, editor. The Problem of Universals. New York: Basic Books, Inc., 1971.
Landgraf, Artur Michael. Einfuhrung in die Geschichte der Theologischen Literatur der Fruhscholastik. Regensburg: Gregorius- Verlag Vorm. Friedrich Pustet, 1948.
Landolt, Eduard. Gelassenheit di Martin Heidegger. Milan: Marzorati, 1967.
Lang, Berel, editor. Philosophical Style: An Anthology about the Reading and Writing of Philosophy. Chicago: Nelson- Hall, 1980.
Langan, John. Catholic Universities in Church and Society: a Dialogue on Ex Corde Ecclesiae. Washington, DC: Georgetown University Press, 1993.
Langan, Thomas. The Meaning of Heidegger: a Critical Study of an Existentialist Phenomenology. New York: Columbia University Press, 1959.
Langan, Thomas. Tradition and Authenticity in the Search for Ecumenic Wisdom. Columbia, Missouri: University of Missouri Press, 1992.
Langer, Monika M. Merleau- Ponty's Phenomenology of Perception: A Guide and Commentary. Tallahassee, Florida: Florida State University Press, 1989.
Langer, Suzanne, and Katherina Knauth. Philosophical Sketches. Baltimore: Johns Hopkins Press, 1962.
Langholm, Odd. L'economia in Tommaso d'Aquino. Milano: Vita e Pensiero, 1996.
Lanza del Vasto, Joseph Jean. Les Quatre Fléaux. Paris: Éditions Denoel, 1959.
Lanza del Vasto, Joseph Jean. Vinôbâ ou le Nouveau Pèlerinage. Paris: Éditions Denoel, 1954.
Largeault, Jean. Enquête sur le Nominalisme. Paris: Béatrice- Nauwelaerts, 1971.
Larkin, Miriam Therese, C.S.J. Language in the Philosophy of Aristotle. The Hague: Mouton, 1971.
Larsen, Robin, et al., editors. Emanuel Swedenborg: a Continuing Vision: a Pictorial Biography and Anthology of Essays and Poetry. New York: Swedenborg Foundation, 1988.
Laski, Harold J. A Grammar of Politics. London: George Allen and Unwin, 1925.
Laski, Harold J. Studies in the Problem of Sovereignty. New Haven, Conn.: Yale University Press, 1918.
Lasserre, Pierre. La Jeunesse d'Ernest Renan: Histoire de la Crise Religieuse au XIXe Siècle De Tréguier à Saint- Sulpice. Paris: Calmann- Lévy, 1928.
Lasserre, Pierre. La Jeunesse d'Ernest Renan: Histoire de la Crise Religieuse au XIXe Siècle L'Initiation Philosophique d'Ernest Renan. Paris: Calmann- Lévy, 1932.
Lasserre, Pierre. La Jeunesse d'Ernest Renan: Histoire de la Crise Religieuse au XIXe Siècle Le Drame de la Métaphysique Chrétienne. Paris: Calmann- Lévy, 1928.
Lasserre, Pierre. Mise au Point. Paris: L'Aristan du Livre, 1931.
Laszlo, Ervin. The Systems View of the World; the Natural Philosophy of the New Developments in the Sciences. New York: G. Braziller, 1972.
Laszlo, Ervin, ed. The World System: Models, Norms, Aplicatoins. First Systems Philosophy Symposium, State University of New York at Geneseo, 1973. New York: G. Braziller, 1973.
Latourelle, René and Gerald O'Collins, editors. Problèmes et Perspectives de Théologie Fondamentale. Tournai, Belgium: Desclée, 1982.
Laurentin, René. The Meaning of Consecration Today: A Marian Model for a Secularized Age. San Francisco: Ignatius Press, 1991.
Laurentin, René. Un Synode Extraordinaire: Pour un Réalisme Chrétien au-delà des Idéologies de Droite et de Gauche, 20 ans apres le Concile, 1965-1985. Paris: O.E.I.L., 1985.
Lavallière, Eve. Ma Conversion. Paris: Librairie Gallimard, 1930.
Lavaud, L. Saint Thomas "Guide des Études". Paris: Pierre Téqui, 1925.
Lawler, Ronald, Donald W. Wuerl, and Thomas Comerford. Lawler, editors The Teaching of Christ: A Catholic Catechism for Adults. Huntington, Ind.: Our Sunday Visitor, 1977.
Lawrence, Nathaniel Morris, ed. Readings in Existential Phenomenology. Englewood Cliffs, NJ: Prentice-Hall, 1967.
Lay Commission on Catholic Social Teaching and the U.S. Economy Toward the Future: Catholic Social Thought and the U.S. Economy. New York: Lay Commission on Catholic Social Teaching, 1984.
Lazzeri, Christian. Force et Justice dans la Politique de Pascal. Paris: Presses Universitaires de France, 1993.
Le Bachelet, Xavier-Marie, S.J. Bellarmin et la Bible Sixto- Clémentine: Étude et Documents Indits. Paris: Beauchesne & Cie, 1911.
Le Fort, Gertrud von. Hymnen an die Kirche. Zurich: Thomas Verlag, 1946.
Le Fort, Gertrud von. La Dernière à l'Échafaud. Paris: Desclée de Brouwer, 1959.
Le Goulard, Mother Veronica Namoyo, P.C.C. A Memory for Wonders: A True Story. San Francisco: Ignatius Press, 1993.
Le Guern, Michel. Pascal et Descartes. Paris: A. G. Nizet, 1971.
Le Lionnais, F., editor. Les Grands Courants de la Pensée Mathématique. Paris: Cahiers du Sud, 1948.
Leach, Michael, ed. I Like Being American: Treasured Traditions, Symbols and Stories. ~~~~
Leaman, Oliver. Moses Maimonides. London: Routledge, 1990.
Lebret, L. J. De l'Efficacité Politique du Chrétien. Paris: Économie et Humanisme, 1946.
Leca, Jean et Roberto Papini, editors. Les Démocraties: Sont-elles Gouvernables? Paris: Economica, 1985.
Leclercq, Jacques, 1891-1971. L'Enseignement de la Morale Chrétienne. Paris: Editions du Vitrail, 1952.
Leclercq, Jacques. La Philosophie Morale de Saint Thomas devant la Pensée Contemporaine. Louvain: Publications Universitaires de Louvain, 1955.
Leclercq, Jacques. Leçons de Droit Naturel Vol. I: Le Fondement du Droit et de la Société. Namur: Maison d'Édition ad. Wesmael- Charlier, 1947.
Leclercq, Jacques. Leçons de Droit Naturel Vol. II: L'Etat ou la Politique. Namur: Maison d'Édition ad. Wesmael- Charlier, 1948.
Leclercq, Jacques. Leçons de Droit Naturel Vol. IV: Les Droits et Devoirs Individuels, 2 parts. Namur: Maison d'Édition ad. Wesmael- Charlier, 1946.
Leclercq, Jean. Memoirs: from Grace to Grace. Petersham, MA: St Bede's Publications, 2000.
Lee, Bernard J. The Galilean Jewishness of Jesus: Retrieving the Jewish Origins of Christianity. New York: Paulist Press, A Stimulus Book, 1988.
Lehrer, Keith and Carl Wagner. Rational Consensus in Science and Society. Dordrecht, Holland: D. Reidel Publishing Co., 1981.
Leibniz, Gottfried Wilhelm, Freiherr von. Discours de Métaphysique et Analyse Détaillée des Lettres à Arnauld. Paris: Librairie Classique Eugène Belin, Belin Frères, nd.
Leibniz, Gottfried Wilhelm, Freiherr von. Extraits de la Théodicée. Paris: Librairie Ch. Delagrave, 1875.
Leibniz, Gottfried Wilhelm, Freiherr von. Gottfried Wilhelm Leibniz's General Investigations Concerning the Analysis of Concepts and Truths. Translation and Commentary by Walter H. O'Briant. Athens, GA: University of Georgia Press, 1968.
Lejeune, Jérôme. The Concentration Can: When Does Human Life Begin? An Eminent Geneticist Testifies. San Francisco: Ignatius Press, 1990.
Lemaitre, Solange, editor. Textes Mystiques d'Orient et d'Occident, 3 vols. Paris: Librairie Plon, 1955.
Lemarié, O. Essai sur la Personne. Paris: Librairie Félix Alcan, 1936.
Lemon, Lee T. The Partial Critics. New York: Oxford University Press, 1965.
Lentfoehr, Sister Thérèse. Words and Silence: On the Poetry of Thomas Merton. New York: New Directions Publishing, 1979.
Leo XIII. Gilson, Etienne, editor The Church Speaks to the Modern World: The Social Teachings of Leo XIII. Garden City, N.Y.: Image Books, Doubleday, 1954.
Lepp, Ignace. The Authentic Morality. New York: Macmillan Co., 1965.
Lepp, Ignace. The Ways of Friendship. New York: Macmillan Co., 1967.
Leprince- Ringuet, Louis. Les Rayons Cosmiques: Les Mésotons. Paris: Albin Michel, 1945.
Leroy, Olivier. Miracles. Paris: Desclée de Brouwer, 1951.
Leroy, Olivier. Sainte Jeanne d'Arc: Les Voix. Paris: Alsatia, 1956.
Leroy, Olivier. Sainte Jeanne d'Arc: son Esprit- Sa Vie. Paris: Alsatia, 1957.
Lescoe, Francis J. God as First Principle in Ulrich of Strasbourg. New York: Alba House, 1979.
Leslie, Shane, editor. An Anthology of Catholic Poets. Westminster, Maryland: The Newman Press, 1953.
Leslie, Shane. The Skull of Swift: An Extempore Exhumation. Indianapolis, Ind.: Bobbs- Merrill Co., 1928.
Levaux, Léopold. Léon Bloy. Louvain: Éditions Rex, 1931.
Levaux, Léopold. Pensées et Maximes du Père Lebbe. Paris: Les Editions Universitaires, 1950?.
Levi, Isaac. Gambling with Truth: An Essay on Induction and the Aims of Science. Cambridge, Mass.: MIT Press, 1973.
Levin, Michael E. Metaphysics and the Mind- Body Problem. Oxford: Clarendon Press, 1979.
Levinas, Emmanuel, Xavier Tilliette, and Paul Ricoeur. Jean Wahl et Gabriel Marcel. Paris: Beauchesne, 1976.
Levinson, H. C. La Chance: La Science du Hasard du Calcul des Probabilités à la Statistique. Paris: Payot, 1952.
Lévi-Strauss, Claude. Les Structures Élémentaires de la Parenté. Paris: Presses Universitaires de France, 1949.
Lévy, Bernard- Henri. Barbarism with a Human Face. New York: Harper Colophon Books, 1979.
Lévy, Jacques. Journal et Correspondance: Fragments précédés d'une étude sur "Les Faux- Monnayeurs" d'André Gide et l'Expérience Religieuse. Grenoble, France: Éditions des Cahiers de l'Alpe, 1954.
Lewis, C. S. Le Problème de la Souffrance. Paris: Desclée de Brouwer, 1951.
Lewis, C. S. The Abolition of Man. New York: Macmillan Co., 1953.
Lewis, C. S. The Problem of Pain. London: The Centenary Press, 1941.
Lewis, C.S. Letters: C.S. Lewis and Don iovanni Calabria: A Study in Friendship. An Arbor, MI: Servant Books, 1988.
Lewis, David. Convention: A Philosophical Study. Cambridge, Mass.: Harvard University Press, 1969.
Lewis, David. Counterfactuals. Cambridge, Mass.: Harvard University Press, 1973.
Lewis, David. On the Plurality of Worlds. Oxford: Basil Blackwell, 1987.
Liber Cantualis. Sablé-sur-Sarthe, France: Abbaye Saint- Pierre de, 1978.
Un Lieu de Mémoire: Port-Royal de Paris. Paris: Bibliothèque Mazarine, 1991.
Liminta, Maria Teresa. Il Problema della Bellezza: Autenticità e Significato dell'Ippia Maggiore di Platone. Milan: Celuc, 1974.
Lio, P. Ermenegildo, O.F.M. S. Bonaventura e la Questione Autografa "De Superfluo". Rome: Facultas Theologica Pontificae Universitatis, 1966.
Lisska, Anthony J. Aquinas's Theory of Natural Law: An Analytic Reconstruction. Oxford: Clarendon Press, 1996.
Listowel, William Francis Hare. Modern Aesthetics: an Historical Introduction. New York: Teachers College Press, 1967.
Liverziani, Filippo. Dinamismo Intellettuale ed Esperienza Mistica Nel Pensiero di Joseph Maréchal. Roma: Edizioni Liber, 1974.
Livi, Antonio. La Ricerca della Verità: Dal Senso Comune alla Dialettica. Seconda edizione riveduta e ampliata. Casa Editrice Leonardo Da Vinci, 2003.
Livy. Rome and the Mediterranean: Books XXXI-XLV of The History of Rome from its Foundation. Harmondsworth, England: Penguin Books, 1978.
Llamzon, Benjamin S. Reason, Experience and the Moral Life: Ethical Absolutism and Relativism in Kant and Dewey. Washington, DC: University Press of America, 1978.
Llano, Alejandro. Discursos en la Universidad (1991-1996): 25 Años de CÔtedra. Pamplona: Universidad de Navarra, 2001.
Llano, Alejandro. El Enigma de la Representación. Madrid: Editorial Sintesis, 1999.
Llano, Alejandro. Fenomeno y Trascendencia en Kant. Pamplona: Ediciones Universidad de Navarra, S.A., 1973.
Llano, Alejandro. Filosofia della Conoscenza. Florence: Le Monnier, 1987.
Llano, Alejandro. MetafÃsica y Lenguaje. Pamplona, Spain: Ediciones Universidad de Navarra (EUNSA), 1984.
Llano, Alejandro. The New Sensibility. Pamplona: Servicio de Publicaciones de la Universidad de Navarra, 1991.
Lloyd, A. C. The Anatomy of Neoplatonism. Oxford: Clarendon Press, 1991.
Loades, Ann and Loyal D. Rue, editors. Contemporary Classics in Philosophy of Religion. La Salle, Ill.: Open Court, 1991.
Lobkowicz, Nikolaus. Was Brachte uns das Konzil?. Wurzburg: Verlag Johann Wilhelm Naumann, 1986.
Locke, John. An Essay Concerning Human Understanding, 2 vols. New York: Dover Publications, 1959.
Lodi, Enzo. Saints of the Roman Calendar: Including Feasts Proper to the English- Speaking World. New York: Alba House, 1992.
Loew, Jacques et G. M. M. Cottier. Dynamisme de la Foi et Incroyance. Paris: Les Éditions du Cerf, 1962.
Loew, Jacques, O.P. Mission to the Poorest. New York: Sheed and Ward, 1950.
Loew, Jacques. As If he Had Seen the Invisible: A Portrait of the Apostle today. Notre Dame, Ind.: Fides Publishers, 1967.
Loew, Jacques. Journal d'Une Mission Ouvrière 1941-1959. Paris: Les Éditions du Cerf, 1959.
Lohr, Charles H. St. Thoms Aquinas, Scriptum Super Sententiis: an Index of Authorities Cited. Amersham, England: Avebury, 1980.
Lonergan, Bernard J. F. Les Voies d'Une Théologie Méthodique. Paris: Desclée, 1982.
Lonergan, Bernard J., S.J. A Third Collection: Papers by Bernard J. F. Lonergan. New York: Paulist Press, 1985.
Lonergan, Bernard J., S.J. Insight: A Study of Human Understanding. London: Longmans, Green and Co., 1958.
Lonergan, Bernard J., S.J. Verbum: Word and Idea in Aquinas. Notre Dame, Ind.: University of Notre Dame Press, 1967.
Lonergan, Bernard. Collected Works of Bernard Lonergan, Vol. 4. Toronto: University of Toronto Press, 1988.
Lonergan, Bernard. Understanding and Being. Collected Works of Bernard Lonergan, Vol. 5. Toronto: University of Toronto Press, 1990.
Long, A. A. Hellenistic Philosophy: Stoics, Epicureans, Sceptics. New York: Charles Scribner's Sons, 1974.
Long, Edward LeRoy, Jr. A Survey of Christian Ethics. New York: Oxford University Press, 1967.
Long, Eugene Thomas, editor. Prospects for Natural Theology. Studies in Philosophy and the History of Philosophy, Vol. 25. Washington, D.C.: Catholic University of America Press, 1992.
Lonning, Per. Cet effrayant pari: une "pensée" pascalienne et ses critiques. Paris: J. Vrin, 1980.
López Frías, Francisco. Ética y Política. En Torno al Pensamiento de J. Ortega y Gasset. Prólogo de Julián Marías. Biblioteca Universitaria de Filosofia / 4. Barcelona: Promociones Publicaciones Universitarias, 1985.
Lorenz, Dietrich. I Fondamenti dell'Ontologia Tomista: Il Trattato De Ente et Essentia. Includes Latin text with parallel Italian translation; introductory material, commentary, and notes in Italian. Bologna, Italia: Edizioni Studio Domenicano, 1992.
Lory, Marie- Joseph. La Pensée Religieuse de Léon Bloy. Paris: Desclée de Brouwer, 1951.
Loubet del Bayle, Jean Louis. Les Non- Conformistes des Années 30: Une Tentative de Renouvellement de la Pensée Politique Française. Paris: Éditions du Seuil, 1969.
Louis of Poissy, Brother. Elementary Course of Christian Philosophy. New York: O'Shea, 1893.
Louis, Pierre. La découverte de la vie Aristote. Paris: Collection Savoir Hermann, 1975.
Lourié, Arthur. Profanation et Sanctification du Temps: Journal Musical 1910-1960. Paris: Desclée de Brouwer, 1966.
Louth, Andrew. Discerning the Mystery: An Essay on the Nature of Theology. Oxford: Clarendon Press, 1983.
Lovibond, Sabina. Realism and Imagination in Ethics. Minneapolis: University of Minnesota Press, 1983.
Lowinger, Armand. The Methodology of Pierre Duhem. New York: Columbia University Press, 1941.
Lualdi, Maria. Il Problema della Philia e il Liside Platonico. Milan: Celuc, 1974.
Lubac, Henri de. Aspects de Bouddhisme. Paris: Aux Éditions du Seuil, 1951.
Lubac, Henri de. Catholicisme: Les Aspects Sociaux du Dogme. Paris: Les Éditions du Cerf, nd.
Lubac, Henri de. Méditation sur l'Église. Paris: Aubier, 1953.
Luijpen, William A. Theology as Anthropology. Pittsburgh: Duquesne University Press, 1973.
Lukac de Stier, Maria Lilliana. El Fundamento Antropológico de la Filosofía Política y Moral en Thomas Hobbes. Tesis doctoral, Universidad Catolica Argentina, Instituto para la Integración del Saber, 1999.
Lukacs, John. A Student's Guide to the Study of History. Wilmington, Del.: ISI Books, 2000.
Lukacs, John. Confessions of an Original Sinner. New York: Ticknor and Fields, 1990.
Lukens, Michael B., editor. Conflict and Community: New Studies in Thomistic Thought. New York: Peter Lang, 1992.
Lumbreras, Pedro. The Twenty-four Fundamental Theses of Official Catholic Philosophy. Notre Dame, IN: The University Press, 1944.
Lusignan, Serge. Préface au Speculum Maius de Vincent de Beauvais: Réfraction et Diffraction. Montreal: Bellarmin, 1979.
Lutz, Christopher Stephen. Tradition in the Ethics of Alasdair McIntyre: Relativism, Thomism, and Philosophy. Lanham, MD: Lexington Books, 2004.
Lynch, John E., C.S.P. The Theory of Knowledge of Vital du Four. St. Bonaventure, N.Y.: The Franciscan Institute, 1972.
Lynch, William F., S.J. Christ and Apollo: The Dimensions of the Literary Imagination. Notre Dame, Ind.: University of Notre Dame Press, 1975.
Lyons, James W. Newman's Dialogues on Certitude. Rome: Catholic Book Agency, 1978.
Lyttkens, Hampus. The Analogy between God and the World. Uppsala: Almqvist and Wiksells, 1952.