University of Illinois Urbana-Champaign

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Showing 1951–1980 of 2,257 items
Thumbnail for Sex Ratios and Age Ratios in North American Ducks
Sex Ratios and Age Ratios in North American Ducks
Bellrose, Frank Chapman; Scott, Thomas G.; Hawkins, Arthur Stuart; Low, Jessop B.

Thumbnail for Sangamon State University undergraduate catalog, 1979-1980
Sangamon State University undergraduate catalog, 1979-1980
Sangamon State University, Office of University Relations