Twin Creek limestone (Jurassic) in the western interior of the United States,
Imlay, Ralph W. 1908-1989.
Twin Creek limestone (Jurassic) in the western interior of the United States, by Ralph W. Imlay. - Washington, U.S. Govt. Print. Off., 1967. - iv, 105 p. illus., maps, 16 plates. 29 cm. - Geological Survey professional paper 540 . - Geological Survey (U.S.). Professional paper ; 540. .
Bibliography: p. 99-102.
gs 66000297
Geology--West (U.S.)
Geology, Stratigraphic--Jurassic.
Paleontology--West (U.S.)
QE75 / .P9 no. 540
I 19.16:540
Twin Creek limestone (Jurassic) in the western interior of the United States, by Ralph W. Imlay. - Washington, U.S. Govt. Print. Off., 1967. - iv, 105 p. illus., maps, 16 plates. 29 cm. - Geological Survey professional paper 540 . - Geological Survey (U.S.). Professional paper ; 540. .
Bibliography: p. 99-102.
gs 66000297
Geology--West (U.S.)
Geology, Stratigraphic--Jurassic.
Paleontology--West (U.S.)
QE75 / .P9 no. 540
I 19.16:540