Ohio Journal of Science: Volume 21, Issue 1 (November, 1920) http://hdl.handle.net/1811/869 2013-05-21T14:17:12Z Back Matter http://hdl.handle.net/1811/2109 Back Matter 1920-11-01T00:00:00Z The Phylogeny of the Zygopterous Dragonflies as Based on the Evidence of the Penes http://hdl.handle.net/1811/2108 The Phylogeny of the Zygopterous Dragonflies as Based on the Evidence of the Penes Kennedy, Clarence Hamilton Author Institution: Ohio State University 1920-11-01T00:00:00Z Kennedy, Clarence Hamilton Report of the Thirtieth Annual Meeting of the Ohio Academy of Science http://hdl.handle.net/1811/2107 Report of the Thirtieth Annual Meeting of the Ohio Academy of Science 1920-11-01T00:00:00Z Front Matter http://hdl.handle.net/1811/2106 Front Matter 1920-11-01T00:00:00Z