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dean m roosa
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Raptors of Iowa
James F. Landenberger, Dean M. Roosa, Jon Stravers, Bruce Ehresman, Richard A. Patterson · University Of Iowa Press
103 sayfa · 2013
Birds of prey
Distribution of Iowa's endangered and threatened vascular plants
Dean M. Roosa · Iowa Dept. of Natural Resources
107 sayfa · 1989
Botany / Extinction / Plants / Rare plants
Endangered and threatened Iowa vascular plants
Dean M. Roosa · State Preserves Advisory Board, State Conservation Commission
93 sayfa · 1979
Endangered plants