L. V. Coppa

Valuation of potash occurrences within the nuclear waste isolation pilot plant site in southeastern New Mexico. Information circular/1980

R. C. Weisner, J. F. Lemons, L. V. Coppa, 1980 .

Principal thorium resources in the United States

Jerry Chipman Olson, L. V. Coppa, B. V. Clingan, 1979 .