Preliminary tests of gold and zinc ores from Buzzard mine, Placerville, Calif. /
by A.L. Engel and H.J. Heinen.
APA Citation
Engel, A. L. (Abraham L.)., Heinen, H. J. (Harold J.). (1949). Preliminary tests of gold and zinc ores from Buzzard mine, Placerville, Calif.. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.
MLA Citation
Engel, A. L. (Abraham L.), and H. J. (Harold J.) Heinen. Preliminary Tests of Gold And Zinc Ores From Buzzard Mine, Placerville, Calif.. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1949.
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