University of Illinois Urbana-Champaign

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Showing 5401–5430 of 39,505 items
Thumbnail for The depth of sewage filters and the degree of purification
The depth of sewage filters and the degree of purification
Buswell, Arthur M.; Strickhouser, Sherman Israel; Pearson, Edmund Lester; Habermeyer, George Conrad; White, Herbert LeRoy; Neave, Sidney Lionel; Symons, G.E.

Thumbnail for Illinois mineral industry in 1975
Illinois mineral industry in 1975
Samson, Irma; Dingwell, Amy G.