The geology of the upper Mississippi Valley zinc-lead distict, by Allen V. Heyl, Jr. [and others] With special sections by Arthur E. Flint. Prepared in cooperation with the Wisconsin Geological and Natural History Survey, the Iowa Geological Survey, and the Illinois State Geological Survey.

By: Material type: TextTextPublication details: Washington, U.S. Govt. Print. Off., 1959.Description: x, 310 p. illus., maps (24 fold. 22 col., in portfolio) diagrs., profiles, tables. 29 cmSubject(s): DDC classification:
  • 557.7
LOC classification:
  • QE75 .P9 no. 309
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Bibliography: p. 296-303.

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