00861cam a22002771 4500 gs 46000118 DLC 20260227111351.0 770314s1946 nmuab b 000 0 eng c gs 46000118 (OCoLC)2802424 U.S. Geol. Survey. Libr OT WaChenE DLC premarc n-us-nm TN24.N6 A232 no. 24 620.136 Clippinger, Donn Merrell, 1915- Building blocks from natural lightweight materials of New Mexico. Socorro, 1946. 40 p. illus., fold. map. 23 cm. Bulletin no. 24 Bibliographical foot-notes. Building stones New Mexico. Concrete blocks. Bulletin (New Mexico. Bureau of Mines and Mineral Resources) ; no. 24. 28098 28098