pre-Illinoian Pleistocene geology of Iowa
By: by George F. Kay and Earl T. Apfel.
Contributors: Apfel, Earl T. 1892-; Iowa Geological Survey
Publisher: Iowa Geological Survey
Published: 1929
Place of publication: [Des Moines
Language: eng
Number of pages: 304
Subjects: Geology -- Iowa; Geology, Stratigraphic -- Pleistocene.
Notes: E. T. Apfel's thesis (PH. D.)-University of Iowa, 1926.

"History of the investigations and classifications of the Pleistocene deposits of Iowa" by G.F. Kay (p. [70]-133) was published separately in 1928.

Reprinted from Iowa Geological Survey, volume xxxiv, Annual report for 1928.

Includes bibliographical references and index.