Callovian (Jurassic) ammonites from the United States and Alaska. : Descriptions and illustrations of cephalopods of Late Jurassic age.

Bibliographic Details
Main Author:	Imlay, Ralph W. (Ralph Willard), 1908-1989
Format:	Government Document Book
Language:	English
Published:	Washington : U.S. Govt. Print. Off, 1953.
Series:	Professional paper (Geological Survey (U.S.)) ; 249.
Subjects:	Ammonoidea. Paleontology > Jurassic. Paléontologie > Amérique du Nord.

Evans: US Documents (Annex 5th floor)