The origin of sedimentary iron formations
Subtitle: the Biwabik formation of the Mesabi Range ...
By: by John Walter Gruner ...
Published: 1922
Place of publication: Lancaster, Pa
Language: eng
Number of pages: 460
Subjects: Iron; Iron ores; Geology
Other titles: Biwabik formation of the Mesabi Range.
Notes: Cover title.

"Reprinted from Economic geology, vol. XVIII., no. 6, September, 1922."

Thesis (Ph. D.)--University of Minnesota, 1922.

Bibliographical foot-notes.