Petrography of the fuller's earth deposits, Olmstead, Illinois
Subtitle: with a brief study of some non-Illinois earths
By: by Ralph E. Grim ...
Series: Illinois.  State geological survey.  Report of investigations -- no. 26
Publisher: Printed by authority of the state of Illinois
Published: 1933
Place of publication: Urbana, Ill
Language: eng
Number of pages: 363
Subjects: Fuller's earth
Notes: At head of title: State of Illinois.  Department of registration and education.  Division of the State geological survey.

Bibliographical foot-notes.