Additions and Notes on the Hemiptera-Heteroptera of Ohio
Osborn, Herbert; Drake, Carl J. pp. 501-508
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The Chromosome Mechanism as a Basis for Mendelian Phenomena
Schaffner, John H. pp. 509-518
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Buried Stream Channels at the Base of the Pennsylvanian System in Southeastern Ohio
Schroyer, C. R. pp. 519-523
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Meeting of the Biological Club
Drake, Carl J. pp. 523-524
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