The development of geological studies in the Grand Canyon
By: Earle E. Spamer.
Contributors: Academy of Natural Sciences of Philadelphia. Dept. of Malacology.; International Geological Congress (28th : 1989 : Washington, D.C.)
Series: Tryonia -- no. 17.
Publisher: Department of Malacology, Academy of Natural Sciences of Philadelphia
Published: 1989
Place of publication: Philadelphia
Language: eng
Number of pages: 87
Subjects: Geology -- Arizona -- Grand Canyon -- History.; Paleontology -- Arizona -- Grand Canyon -- History.
Other titles: Geological studies in the Grand Canyon.
Notes: "Contribution of the Invertebrate Paleontology Section, no. 1."

"Prepared for the 28th International Geological Congress Colorado River field trips through the Grand Canyon, Lees Ferry to Temple Bar, Lake Mead, Arizona June-July 1989."

Cover title.

Running title: Geological studies in the Grand Canyon.

Bibliography: p. 69-83.