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 . - Bulletin (New Mexico. Bureau of Mines and Mineral Resources) ; no. 24. . Bibliographical foot-notes. LCCN: gs 46000118 Subjects--Topical Terms: Building stones--New Mexico.Concrete blocks. LC Class. No.: TN24.N6 / A232 no. 24 Dewey Class. No.: 620.136