University of Illinois Urbana-Champaign

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Showing 601–630 of 11,340 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 Du Page River area assessment
Du Page River area assessment
Submitter: Steven Mccauley

Thumbnail for Illinois birds, vireos
Illinois birds, vireos
Graber, Jean Weber; Kirk, Ethelyn L.; Graber, Richard Rex

Thumbnail for Lower Rock River area assessment
Lower Rock River area assessment
Submitter: Steven Mccauley

Thumbnail for Geology of the Eddyville, Stonefort, and Creal Springs Quadrangles, southern Illinois
Geology of the Eddyville, Stonefort, and Creal Springs Quadrangles, southern Illinois
Nelson, W. John; Devera, Joseph A.; Jacobson, Russell J.; Lumm, Donald K.; Peppers, Russel A.; Trask, Brian; Weibel, C. Pius; Follmer, Leon R.; Riggs, Matthew H.; Esling, Steven P.; Henderson, Elizabeth D.; Lannon, Mary S.

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