00904cam a22002531 4500 gs 13000362 DLC 20260227111314.0 790411s1913 xx 000 0 eng c gs 13000362 (OCoLC)4844399 Library, U.S. Geol. survey OCl DLC premarc QE75 .B9 no. 522 TN945 .E3 Copy 2. Eckel, Edwin C. (Edwin Clarence), 1875-1941. Portland cement materials and industry in the United States, by Edwin C, Eckel, with contributions by Ernest F. Burchard and others. Washington, Govt. print off., 1913. 401 p. maps (part fold.) diagrs. 24 cm. U.S. Geological survey. Bulletin 522 Contains bibliographies. Portland cement. Burchard, Ernest F. (Ernest Francis), 1875-1961. 25252 25252