The biological resources of Illinois caves and other subterranean environments :
determination of the diversity, distribution, and status of the subterranean faunas of Illinois caves and how these faunas are related to groundwater quality /
Donald W. Webb, Steven J. Taylor, and Jean K. Krejca ; prepared for the Environmental Protection Trust Fund Commission and Illinois Department of Energy and Natural Resources, Office of Research and Planning.

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Limited (search only)   University of Illinois at Urbana-Champaign
Limited (search only)   Cornell University