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The genus Notonecta of the world (Notonectidae-Hemiptera)
Vol 21, Iss 1, Page 5, Date 1933
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The genus Notonecta of the World (Notonectidae-Hemiptera)
Vol 21, Iss 1, Page 5, Date 1934
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The Giant Water Bugs (Belostomatidæ-Hemiptera)
Vol 21, Iss 2, Page 197, Date 1933-03-01
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A study of the genus Brachymetra (Hemiptera-Gerridae)
Vol 21, Iss 3, Page 221, Date 1933-03-01
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The Genus Chlorotettix in America North of Mexico
Vol 21, Iss 4, Page 235, Date 1933-03-01
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A new species of lizard from Mexico
Vol 21, Iss 5, Page 257, Date 1933-03-01
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Observations on the courtship of turtles
Vol 21, Iss 6, Page 269, Date 1933-03-01
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A new Bassariscus from the Lower Pliocene of Nebraska
Vol 21, Iss 7, Page 273, Date 1933-03-01
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Two New Species of CÅ“lacanthus from the Middle Pennsylvanian of Anderson County, Kansas
Vol 21, Iss 8, Page 279, Date 1933-03-01
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Cephalopods of the Pierre formation of Wallace County, Kansas, and adjacent area
Vol 21, Iss 9, Page 289, Date 1933-03-01
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A new Megasecopteron from the carboniferous of Kansas
Vol 21, Iss 10, Page 365, Date 1933-03-01
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Comparative Anatomical Research Within the Genus Ribes
Vol 21, Iss 11, Page 369, Date 1933-03-01
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Morphology and Anatomy of Mollugo verticillata L.
Vol 21, Iss 12, Page 399, Date 1933-03-01
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Morphology and Anatomy of Lygodesmia juncea (Pursh) D. Don.
Vol 21, Iss 13, Page 421, Date 1933-03-01
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Comparative Anatomy of Lentzelia oligosperma and M. decapetala
Vol 21, Iss 14, Page 439, Date 1933-03-01
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Some Studies on the Transference of Ions in Anhydrous Acetic Acid Solution
Vol 21, Iss 15, Page 463, Date 1933-03-01
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The Effects of a Minimal Lethal Dose of X-Rays upon Chick Embryos
Vol 21, Iss 16, Page 479, Date 1933-03-01