Front Matter
p. 0
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The Aims of Social Evolution
Weiss, Albert P. pp. 115-134
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Emerson McMillin
Mendenhall, T. C. pp. 135-148
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Observations on the Sexual State of Various Plants
Schaffner, John H. pp. 149-159
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Some Confused Species of Phlepsius and Eutettix (Homoptera)
Osborn, Herbert pp. 160-162
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Back Matter
p. 999
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