University of Illinois Urbana-Champaign

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Showing 661–690 of 3,080 items
Thumbnail for Sand and gravel resources of Mason County, Illinois
Sand and gravel resources of Mason County, Illinois
Labotka, Theodore C.; Hester, Norman C.

Thumbnail for Outlines of presentations
Outlines of presentations
Illinois Custom Spray Operators' School

Thumbnail for The teaching of plant life
The teaching of plant life
Black, William Wesley

Thumbnail for Precipitation Augmentation for Crops Experiment (PACE) - Pre-experiment Studies
Precipitation Augmentation for Crops Experiment (PACE) - Pre-experiment Studies
Achtemeier, Gary L.; Changnon, Stanley A., Jr.; Dzurisin, Gregory L.; Jameson, Arthur R.; Johnson, David B.; Semonin, Richard G.