Current developments in clay and clay products
Subtitle: extract of the contributions of the fifth annual Illinois Mineral Industries Conference
Series: Circular / State Geological Survey -- no. 23-C; Circular (Illinois State Geological Survey) -- no. 23-C.
Publisher: Illinois State Geological Survey
Published: 1938
Place of publication: Urbana
Language: eng
Number of pages: 54
Subjects: Congresses; Clay
Notes: Cover title.

Includes bibliographical references.