Refractory clays in Calhoun and Pike counties, Illinois
By: by J.E. Lamar ...
Series: Illinois. State geological survey. Report of investigations -- no. 22
Publisher: Printed by authority of the State of Illinois (Schnepp and Barnes, printers
Published: 1931
Place of publication: Urbana, Illinois; Springfield, Ill.]
Language: eng
Number of pages: 43
Subjects: Clay
Notes: At head of title: State of Illinois. Department of registration and education.