University of Illinois Urbana-Champaign

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Showing 1–30 of 247 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 The INHS IDOT Programs Annual Report 2012
The INHS IDOT Programs Annual Report 2012
Heske, Ed; Carney, Irenka; Warwick,Charles