Iowan drift
Subtitle: a review of the evidences of the Iowan stage of glaciation; a co-operative study for the U.S. Geological survey and the Iowa Geological survey
By: by William C. Alden ... and Morris M. Leighton ...
Contributors: Leighton, Morris M. b. 1887, joint author.
Published: 1917
Place of publication: Des Moines
Language: eng
Number of pages: 212
Subjects: Geology -- Iowa; Drift -- Iowa
Notes: M.M. Leighton's thesis (Ph. D.)--University of Chicago, 1916.
"Private edition, distributed by the University of Chicago libraries, Chicago, Illinois."
"Reprinted from Iowa Geological survey, volume XXVI, Annual report for 1915."