01169cam a22002771 4500 gs 60000176 DLC 20260227111409.0 780712s1959 nmuab b s000 0 eng c gs 60000176 (OCoLC)4047427 U.S. Geol. Survey. Libr. TxE OCoLC DLC premarc TN24.N6 A232 no. 63 Baldwin, Brewster. Geologic studies of Union County, New Mexico: Geology of Union County. Volcanic rocks of Des Moines quadrangle. By Brewster Baldwin and William R. Muehlberger. Socorro, State Bureau of Mines and Mineral Resources, New Mexico Institute of Mining & Technology, 1959. ix, 171 p. illus., maps (part col.) tables. 23 cm. New Mexico. Bureau of Mines and Mineral Resources. Bulletin 63 Part of illustrative matter fold. in pocket. Bibliography: p. [158]-162. Geology New Mexico Union County. Igneous rocks. Muehlberger, William R., joint author. Bulletin (New Mexico. Bureau of Mines and Mineral Resources) ; 63. 29435 29435