00997cam a22002891 4500 gs 67000155 DLC 20260227111420.0 780627s1967 dcuab b f000 0 eng gs 67000155 (OCoLC)4011780 DLC OClU OCoLC ISS DLC premarc QE75 .P9 no. 556 552/.00978 I 19.16:556 Cadigan, Robert Allen, 1918- Petrology of the Morrison Formation in the Colorado Plateau region, by Robert A. Cadigan. Washington, U.S. Govt. Print. Off., 1967. v, 113 p. illus., maps (1 fold. in pocket) 29 cm. Geological Survey (U.S.). Professional paper, 556 "Prepared on behalf of the U. S. Atomic Energy Commission." Bibliography : p. 110-112. Petrology Colorado Plateau Geology Colorado Plateau Geology, Stratigraphic Jurassic 30305 30305