01174cam a22003131 4500 gs 67000169 DLC 20260227111420.0 780627s1967 dcuab b f000 0 eng gs 67000169 (OCoLC)4011760 DLC OClU ISS DLC premarc QE75 .P9 no. 561 552/.5 I 19.16:561 Hill, Thelma P., 1917- Chemical composition of sedimentary rocks in Colorado, Kansas, Montana, Nebraska, North Dakota, South Dakota, and Wyoming. Compiled by Thelma P. Hill, Marian A. Werner, and M. Julia Horton. With an introd. by William W. Rubey. Washington, U.S. Govt. Print. Off., 1967. v, 241 p. illus., maps (1 col.) 29 cm. Geological Survey (U.S.). Professional paper, 561 Part of illustrative matter folded in pocket. Bibliography: p. 225-231. Sedimentary rocks Rocks Analysis Petrology West (U.S.) Werner, Marian A., 1935- joint author. Horton, M. Julia, 1936- joint author. 30314 30314