Middle Jurassic (Bajocian) ammonites from eastern Oregon /

Bibliographic Details
Main Author:	Imlay, Ralph W. (Ralph Willard), 1908-1989
Corporate Author:	Geological Survey (U.S.)
Format:	Government Document Book
Language:	English
Published:	Washington : U.S. Govt. Print. Off, 1973.
Series:	Geological Survey professional paper ; 756.
Subjects:	Ammonoidea > Oregon. Paleontology > Jurassic. Paleontology > Oregon. Paléontologie > Amérique du Nord.

Description
Item Description:	Part of illustrative matter in pocket.
Physical Description:	iv, 100 pages : 47 plates ; 29 cm.
Bibliography:	Bibliography: pages 92-95.