Feldspar in Illinois sands, a study of resources
By: by H. B. Willman. Printed by authority of the state of Illinois.
Published: 1942
Place of publication: Urbana, Illinois
Language: eng
Number of pages: 87
Subjects: Feldspar.; Sand.
Notes: At head of title: State of Illinois, Dwight H. Green, Governor. Dept. of Registration and Education, Frank G. Thompson, Director. Division of the State Geological Survey, M. M. Leighton, Chief, Urbana.