The orig in of gumbotil ...
By: by George Frederick Kay in collaboration with J. Newton Pearce.
Contributors: Pearce, James Newton, 1873- joint author.
Published: 1920
Place of publication: [Chicago
Language: eng
Number of pages: 125
Subjects: Clay.; Geology, Stratigraphic -- Pleistocene.
Other titles: Gumbotil,  The origin of.
Notes: Thesis (Ph. D.)--University of Chicago, 1914.
"Private edition, distributed by the University of Chicago libraries, Chicago, Illinois."
Reprinted from the Journal of geology, vol. xxviii, no. 2, February-March 1920.