Progress reports - metallurgical division.
[No.] 22,
Ore-testing studies, 1936-37 : (special methods of analysis and testing and details of tests on various ores.) / by the staff of the Ore-testing Section.
APA Citation
United States. Bureau of Mines. Metallurgical Division. Ore-testing Section. (1938). Progress reports - metallurgical division. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.
MLA Citation
United States. Bureau of Mines. Metallurgical Division. Ore-testing Section. Progress Reports - Metallurgical Division. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1938.
Warning: These citations may not always be complete (especially for serials).