Analyses and other properties of Oregon coals as related to their utilization,
Yancey, H. F. 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.
gs 40000154
Coal--Analysis.
Coal--Oregon.
QE155 / .A3 no. 20
285 s B no. 20
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.
gs 40000154
Coal--Analysis.
Coal--Oregon.
QE155 / .A3 no. 20
285 s B no. 20