University of Illinois Urbana-Champaign

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Showing 2521–2550 of 9,153 items
Thumbnail for Sinkhole Distribution and Density of Waterloo Quadrangle, Monroe County, Illinois
Sinkhole Distribution and Density of Waterloo Quadrangle, Monroe County, Illinois
Panno, Samuel V.; Angel, Julie C.; Nelson, Dan O.; Weibel, C. Pius; Luman, Donald E.; Denny, F. Brett

Thumbnail for The Petrology of Underclays
The Petrology of Underclays
Schultz, Leonard Gene

Thumbnail for INHS Reports, May/June 1996
INHS Reports, May/June 1996
Illinois Natural History Survey