Carr-Saunders, A.M.
The Professions
Clarendon Press, 1933
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Schrag, Clarence C.
Sociology
Harper & Row, 1963
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Sociology
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Zanden, James W. Vander
Sociology
John Wiley & Sons, 1979
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Ogburn, William F.
Sociology
Houghton Mifflin, 1946
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