Decolorization of southern Illinois silica
By: by J.S. Machin and F.V. Tooley
Contributors: Tooley, Fay Vanisle, joint author
Series: Illinois. State geological survey. Report of investigations -- no. 47
Publisher: Printed by authority of the State of Illinois
Published: 1937
Place of publication: Urbana, Ill
Language: eng
Number of pages: 35
Subjects: Silica
Notes: At head of title: State of Illinois. Department of registration and education ... Division of the State geological survey ...

Bibliography: p. 34-35.