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Ohio Journal of Science: Volume 21, Issue 1 (November, 1920)

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Front Matter
p. 0
Article description | Article Full Text PDF (1413KB)

Report of the Thirtieth Annual Meeting of the Ohio Academy of Science
pp. 1-18
Article description | Article Full Text PDF (1207KB)

The Phylogeny of the Zygopterous Dragonflies as Based on the Evidence of the Penes
Kennedy, Clarence Hamilton pp. 19-32
Article description | Article Full Text PDF (930KB)

Back Matter
p. 999
Article description | Article Full Text PDF (1307KB)

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