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- Rotteck, Carl von, 1775-1840 (4)
- Hobbes, Thomas, 1588-1679 (3)
- Pufendorf, Samuel, Freiherr von, 1632-1694 (2)
- Warrender, Howard (2)
- Adler, Mortimer Jerome, 1902- (1)
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- Bloch, Ernst, 1885-1977 (1)
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- Cassin, René, 1887-1976 (1)
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- De la Chapelle, Philippe (1)
- Encyclopaedia Britannica (1)
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- Ferreira, Oliveiros S. (1)
- Goldsmith, M. M. (1)
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- Himma, Kenneth Einar (1)
- Kautz, Steven J. (1)
- Kennett, Basil, 1674-1715 (1)
- Kierkegaard, Søren, 1813-1855 (1)
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- Machado, Lourival Gomes (1)
- Maritain, Jacques, 1882-1973 (1)
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- Messner, Johannes, 1891-1984 (1)
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- Mougel, René (1)
- Nietzsche, Friedrich Wilhelm, 1844-1900 (1)
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- Obert, Marcus, 1962- (1)
- Passerin d'Entrèves, Alessandro, 1902-1985 (1)
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- Raphael, D. D. (David Daiches), 1916- (1)
- Riaza Morales, José María (1)
- Ritter, Joachim, 1903-1974 (1)
- Shapiro, Scott (1)
- Tönnies, Ferdinand, 1855-1936 (1)
- Wannenmann, P. (Peter) (1)
- Weisser-Lohmann, Elisabeth (1)
- Whewell, William, 1794-1866 (1)
- Wiebking, Wolfgang, 1941- (1)
- Wilkins, Burleigh Taylor (1)
- Willey, Basil, 1897-1978 (1)
- Winfield, Richard Dien, 1950- (1)
- Wright, Benjamin Fletcher, 1900- (1)