Carbonizing properties of Allegheny County, Pa., coals /
by D.E. Wolfson and G.W. Birge.
APA Citation
Wolfson, D. E. (David E.)., Birge, G. W. (George W.). (1959). Carbonizing properties of Allegheny County, Pa., coals. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.
MLA Citation
Wolfson, D. E. (David E.), and G. W. (George W.) Birge. Carbonizing Properties of Allegheny County, Pa., Coals. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1959.
Warning: These citations may not always be complete (especially for serials).