University of Illinois Urbana-Champaign

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Showing 31–60 of 69 items
Thumbnail for Hook-and-Line Catch in Fertilized and Unfertilized Ponds
Hook-and-Line Catch in Fertilized and Unfertilized Ponds
Hansen, Donald F.; Bennett, George William; Webb, Donald W.; Lewis, John M.

Thumbnail for The Reproductive Cycle of the Raccoon in Illinois
The Reproductive Cycle of the Raccoon in Illinois
Sanderson, Glen C.; Nalbandov, A.V.

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.