01184cam a22003251 4500 gs 40000154 DLC 20260227111345.0 780808s1940 orua b s000 0 eng c gs 40000154 (OCoLC)4120135 U. S. Geol. Survey. Libr. NcRS NcRS DLC premarc n-us-or x4x4 QE155 .A3 no. 20 285 s B no. 20 Yancey, H. F. (Harry Fagan), 1890- Analyses and other properties of Oregon coals as related to their utilization, by H. F. Yancey and M. R. Geer. [Portland, 1940] iv, 38 p. illus. 28 cm. Oregon. State Dept. of Geology and Mineral Industries. Bulletin no. 20 At head of title: State of Oregon. Department of Geology and Mineral Industries. In cooperation with the Bureau of Mines, United States Department of the Interior. Photoprinted. Bibliographical foot-notes. Coal Analysis. Coal Oregon. Geer, Max Richard, 1912- United States. Bureau of Mines. 27628 27628