Encyclopaedia of the social sciences : volumes 9-10
editor in chief Edwin R. A. Seligman
MacMilan Company, 1953
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Encyclopaedia of the social sciences : volumes 11-12
editor in chief Edwin R. A. Seligman
MacMilan Company, 1953
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Encyclopaedia of the social sciences : volumes 15
editor in chief Edwin R. A. Seligman
MacMilan Company, 1953
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The encyclopedia of philosophy: volumes 1 and 2
editor, Paul Edwards
MacMilan, 1972
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The Encyclopedia of philosophy: volumes 3 and 4
editor, Paul Edwards
MacMilan, 1972
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