Carbonizing properties of Somerset County, Pa., coals /
by D.E. Wolfson, G.W. Birge, and B.W. Naugle.
APA Citation
Wolfson, D. E. (David E.)., Naugle, B. W. (Bruce W.)., Birge, G. W. (George W.)., United States. Bureau of Mines. (1956). Carbonizing properties of Somerset County, Pa., coals. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.
MLA Citation
Wolfson, D. E. (David E.), B. W. (Bruce W.) Naugle, G. W. (George W.) Birge, and United States. Bureau of Mines. Carbonizing Properties of Somerset County, Pa., Coals. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1956.
Warning: These citations may not always be complete (especially for serials).