http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Callovian (Jurassic) ammonites from the United States and Alaska
Alaska peninsula and the Cook Inlet regions
Alaska peninsula dnd the Cook Inlet regions
1 online resource (iii, 108 pages, 31 unnumbered page of plates) : illustrations, maps.
"Descriptions and illustrations of cephalopods of Late Jurassic age."
Includes bibliographical references (pages 34-35) and index.
Imlay, Ralph W. (Ralph Willard), 1908-1989.
Geological Survey professional paper ; 249-B