University of Illinois Urbana-Champaign

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Thumbnail for Results of scientific soil treatment Part II
Results of scientific soil treatment Part II
Mann, Frank I.; Hopkins, Cyril G.

Thumbnail for The mineral content of Illinois waters
The mineral content of Illinois waters
Bartow, Edward; Parr, Samuel Wilson; Palmer, George Thomas; Udden, Johan August

Thumbnail for The mineral content of Illinois waters
The mineral content of Illinois waters
Bartow, Edward; Udden, Johan August; Parr, Samuel Wilson; Palmer, George Thomas