Rare earth and trace element content of an unusual clay on Hicks Dome in Hardin County, Illinois
By: J.C. Bradbury
Contributors: Illinois State Geological Survey
Series: Illinois industrial minerals notes -- no. 11
Publisher: Illinois State Geological Survey
Published: 1960
Place of publication: Urbana, Ill
Language: eng
Subjects: Rare Earths; Clay
Notes: Caption title.

"July 20, 1960."

Includes bibliographical references (leaf 4).