University of Illinois Urbana-Champaign

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Showing 6331–6360 of 103,185 items
Thumbnail for Research needs of Illinois' coal industry; a symposium relating to recovery, preparation, marketing practice, utilization, and basic research presented at quarter centennial celebration of Illinois State Geological Survey, April 30, 1930.
Research needs of Illinois' coal industry; a symposium relating to recovery, preparation, marketing practice, utilization, and basic research presented at quarter centennial celebration of Illinois State Geological Survey, April 30, 1930.
Ketchum, Milo Smith; Garcia, John Adrian; Holbrook, Elmer Allen; Willard, Arthur Cutts; Severns, William Harrison; Parr, Samuel Wilson; Thiessen, Rhinehardt; Honnold, Fred C.

Thumbnail for Douglas County soils / 43
Douglas County soils / 43
Smith, Raymond Stratton

Thumbnail for Logan County soils / 39
Logan County soils / 39
Smith, Raymond Stratton

Thumbnail for Whiteside County soils / 40
Whiteside County soils / 40
Smith, Raymond Stratton

Thumbnail for Washability characteristics of Illinois coal screenings
Washability characteristics of Illinois coal screenings
Mitchell, David Ray; McCabe, Louis Cordell

Thumbnail for Marion County soils / 34
Marion County soils / 34
Smith, Raymond Stratton

Thumbnail for Vermilion County soils / 62
Vermilion County soils / 62
Wascher, Herman L.; Smith, Louie Henrie; Smith, Raymond Stratton

Thumbnail for Pesticides and honey bees
Pesticides and honey bees
Jaycox, Elbert R.