A survey of some Illinois materials possibly useful as pozzolans
By: W.A. White and J.S. Machin
Contributors: Machin, J. S.; Illinois State Geological Survey
Series: Illinois industrial minerals notes -- no. 12
Publisher: Illinois State Geological Survey
Published: 1961
Place of publication: Urbana, Ill
Language: eng
Subjects: Pozzuolanas; Clay
Notes: Caption title.

"March 30, 1961."