Evolution by atrophy in biology and sociology Demoor, J. (Jean), 1867-1941 creator Massart, Jean, 1865-1925 contributor Vandervelde, Emile, 1866-1938 contributor Mitchell, Chalmers, Mrs. contributor text book New York D. Appleton and Company 1899 1899
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ENG Evolution Sociology HM106 .D4 International scientific series, [79] The international scientific series, [79] https://www.biodiversitylibrary.org/bibliography/44404 4800400 40011793 10.5962/bhl.title.44404 DLC