TY  - BOOK
AU  - Hill,Thelma P.
AU  - Werner,Marian A.
AU  - Horton,M.Julia
TI  - Chemical composition of sedimentary rocks in Colorado, Kansas, Montana, Nebraska, North Dakota, South Dakota, and Wyoming
AV  - QE75 .P9 no. 561
U1  - 552/.5 
PY  - 1967///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Sedimentary rocks
KW  - Rocks
KW  - Analysis
KW  - Petrology
KW  - West (U.S.)
N1  - Part of illustrative matter folded in pocket; Bibliography: p. 225-231
ER  -