University of Illinois Urbana-Champaign

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Showing 91–120 of 939 items
Thumbnail for Sinkhole distribution and density of Columbia Quadrangle, Monroe and St. Clair Counties, Illinois
Sinkhole distribution and density of Columbia Quadrangle, Monroe and St. Clair Counties, Illinois
Panno, Samuel V.; Angel, Julie C.; Nelson, Dan O.; Weibel, C. Pius; Luman, Donald E.

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