Κανονική προβολή Προβολή MARC Προβολή ISBD

Vallier, Tracy L. 1936-

The permian and triassic seven devils group, western Idaho and northeastern Oregon / by Tracy L. Vallier. - Washington: United States Government Printing Office, 1977. - iv, 58 p. : maps, tables ; 23 cm. - 1437 .

Includes bibliographical references (p. 56-58).

Subjects--Topical Terms:
Geology, Stratigraphic--United States--Oregon

Dewey Class. No.: 551.7