1. Selenium content of some volcanic rocks from western United States and Hawaiian Islands Author/Creator: Davidson, David F. 1923- (David Francis), author Publication/Creation: Washington, D.C. : United sStates Department of the Interior, Geological Survey, 1959 Resource Type: Book Access & Availability: Loading
2. Selenium content of some volcanic rocks from western United States and Hawaiian Islands Author/Creator: Davidson, David F. 1923- (David Francis) Publication/Creation: Washington [D.C.] : U.S. G.P.O., 1959 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1084. Access & Availability: Loading
3. Spectrophotometric determination of traces of lead in igneous rocks Author/Creator: Thompson, C. E. 1931- (Charles Emmet) Publication/Creation: Washington [D.C.] : U.S. G.P.O., 1960 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1084. Access & Availability: Loading
4. Spectrophotometric determination of traces of lead in igneous rocks Author/Creator: Thompson, C. E. 1931- (Charles Emmet), author Publication/Creation: Washington, D.C. : United States Department of the Interior, Geological Survey, 1960 Resource Type: Book Access & Availability: Loading