Bulk sampling by diamond drilling :
Dudley manganese deposit, Northern District, Aroostook County, Maine /
by N.A. Eilertsen and K.M. Earl.
APA Citation
Eilertsen, N. A., Earl, K. M. (1957). Bulk sampling by diamond drilling: Dudley manganese deposit, Northern District, Aroostook County, Maine. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.
MLA Citation
Eilertsen, Nils A, and K. M Earl. Bulk Sampling by Diamond Drilling: Dudley Manganese Deposit, Northern District, Aroostook County, Maine. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1957.
Warning: These citations may not always be complete (especially for serials).