Evaluation of a radioisotopic X-ray drill-hole probe :
delineation of lead ores /
by Harold E. Marr III and William J. Campbell.

APA Citation

Marr, H. E., Campbell, W. Joseph., College Park Metallurgy Research Center (U.S.)., United States. Bureau of Mines. (1972). Evaluation of a radioisotopic X-ray drill-hole probe: delineation of lead ores. [Washington, D.C.]: U.S. Dept. of Interior, Bureau of Mines.

MLA Citation

Marr, Harold E., III, William Joseph Campbell, College Park Metallurgy Research Center (U.S.), and United States. Bureau of Mines. Evaluation of a Radioisotopic X-ray Drill-hole Probe: Delineation of Lead Ores. [Washington, D.C.]: U.S. Dept. of Interior, Bureau of Mines, 1972.