Exploratory drilling program of the U.S. Geological Survey for evidences of zinc-lead mineralization in Iowa and Wisconsin, 1950-51
By: by Allen F. Agnew, Arthur E. Flint and John W. Allingham
Series: Geological Survey circular -- 231; Geological Survey circular -- 231.
Published: 1953
Place of publication: Washington
Language: eng
Number of pages: 37
Subjects: Zinc mines and mining; Lead mines and mining
Notes: Part of illustrative material in pocket.

Prepared in cooperation with the Wisconsin Geological and Natural History Survey.

"Literature cited": p. 11.