Selected geologic data from the northern Great Plains area of Montana
By: by R.D. Feltis ... [et al.]
Contributors: Feltis, R. D. 1930-; Geological Survey (U.S.)
Series: Water-resources investigations; Open-file report -- 81-415; Open-file report (Geological Survey (U.S.)) -- 81-415
Publisher: U.S. Geological Survey
Published: 1981
Place of publication: Helena, Mont
Language: eng
Format: Microform
Subjects: Geology -- Montana
Notes: Microfiche. [Denver, Colo. : U.s. Geological Survey, 1981?]. 2 microfiches ; 11 x 15 cm

"August 1981."

Bibliography: p. 6