University of Illinois Urbana-Champaign

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Showing 5311–5340 of 6,215 items
Thumbnail for Aprendiendo con tecnologías
Aprendiendo con tecnologías
Willging, Pedro; Astudillo, Gustavo; Francia, Alicia; Scagnoli, Norma

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 Petroleum industry in Illinois, 1975. Part I. Oil and Gas Developments
Petroleum industry in Illinois, 1975. Part I. Oil and Gas Developments
Illinois State Geological Survey; Van Den Berg, Jacob; Lawry, Thomas F.