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Nesting biology of mallards in west-central Illinois

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By: Yetter, Aaron P. - Warwick, Charles. - Levengood, Jeffrey M. - Illinois. Natural History Survey Division

Publication info: Champaign, Ill, Illinois Natural History Survey, 2009

Holding Institution: University Library, University of Illinois Urbana Champaign
Wood duck investigations : W-118-R-2 1 July 1993 through 30 June 1994 annual federal aid performance report

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By: Havera, Stephen P. - Yetter, Aaron P. - Hine, Christopher S. - Illinois. Natural History Survey Division. Center for Wildlife Ecology.

Publication info: Havana, Ill, Illinois Natural History Survey, Center for Wildlife Ecology, 15 August 1994

Holding Institution: University Library, University of Illinois Urbana Champaign