Geography of the upper Illinois Valley and history of development,
by Carl Ortwin Sauer. Printed by authority of the state of Illinois.
|Main Author:||Sauer, Carl Ortwin, 1889-1975.|
Urbana, Illinois State geological survey, University of Illinois, 1916.
Geology > Geology / Illinois.
folded frontispiece, illustrations, folded map, diagrams
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|Full view||University of Illinois at Urbana-Champaign|
|Full view Illinois State Geological Survey Bulletin No. 27||University of Illinois at Urbana-Champaign|