University of Illinois Urbana-Champaign

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Showing 241–270 of 8,636 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 Institutional profile / 2
Institutional profile / 2
University of Illinois at Urbana-Champaign

Thumbnail for Annual register. 1921-22
Annual register. 1921-22
University of Illinois at Urbana-Champaign