Coking-coal deposits of the western United States,
Berryhill, Louise R.
Coking-coal deposits of the western United States, by Louise R. Berryhill and Paul Averitt. - [Washington] 1951. - i, 20 p. map., diagr. 27 cm. - Geological Survey circular 90 .
Cover title.
"References": p. 19-20.
gs 51000256
Coking coal--United States
QE75 / .C5 no. 90
Coking-coal deposits of the western United States, by Louise R. Berryhill and Paul Averitt. - [Washington] 1951. - i, 20 p. map., diagr. 27 cm. - Geological Survey circular 90 .
Cover title.
"References": p. 19-20.
gs 51000256
Coking coal--United States
QE75 / .C5 no. 90