Geological aspects of prospecting
Subtitle: and areas for prospecting in the zinc-lead district of northwestern Illinois
By: by H. B. Willman, R. R. Reynolds, and Paul Herbert, jr.
Contributors: Reynolds, Robert Ramon, joint author.; Herbert, Paul, joint author.
Published: 1946
Place of publication: Urbana, Ill
Language: eng
Number of pages: 48
Subjects: Zinc mines and mining -- Illinois.; Geology -- Illinois.; Prospecting.
Notes: At head of title: State of Illinois...Dept. of registration and education...Division of the State geological survey...
The folded maps are in pocket.