00845cam a22002531 4500 gs 42000207 DLC 20260227111348.0 790611s1942 laua b s000 0 eng gs 42000207 (OCoLC)5054156 DLC TxCM DLC premarc QE117 .A22 no. 22 Welch, Robert Newman, 1912- Geology of Vernon Parish, by Robert N. Welch. Baton Rouge, La., Dept. of Conservation, Louisiana Geological Survey, 1942. xii, 90 p. illus. Louisiana Geological Survey Geological bulletin no. 22 At head of title: State of Louisiana. Dept. of Conservation. Folded map inserted. Bibliography: p. [83]-86. Geology Louisiana Vernon Parish. 27809 27809