University of Illinois Urbana-Champaign

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Showing 5191–5220 of 9,597 items
Thumbnail for The geology of Hardin County, and the adjoining part of Pope County.
The geology of Hardin County, and the adjoining part of Pope County.
Weller, Stuart; Butts, Charles; Currier, Louis W.; Salisbury, Rollin D.

Thumbnail for Manganese in water supplies
Manganese in water supplies
Corson, Harry Peach

Thumbnail for Macon County soils / 45
Macon County soils / 45
Smith, Raymond Stratton