The
geology of the upper Mississippi Valley zinc-lead distict
Upper Mississippi Valley zinc-lead district
Heyl, Allen Van
1918-
creator
text
bibliography
dcu
Washington
U.S. Govt. Print. Off.
1959
monographic
eng
x, 310 p. illus., maps (24 fold. 22 col., in portfolio) diagrs., profiles, tables. 29 cm.
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.
Bibliography: p. 296-303.
Geology
Mississippi River Valley
Zinc mines and mining
Mississippi River Valley
QE75 .P9 no. 309
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I 19.16:309/
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