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Heyl, Allen V.
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Agnew, Allen F.
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ECONIS (ZBW)
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The Geology of the Upper Mississippi Valley Zinc-Lead District : Prepared in cooperation with the Wisconsin Geological and Natural History Survey, the Iowa Geological Survey, and t...
Heyl, Allen V.
;
Agnew, Allen F.
;
Lyons, Erwin J.
; …
-
1959
Persistent link: https://www.econbiz.de/10000308134
Saved in:
2
Zoning of the Bitter Creek vanadium-uranium deposit near Uravan, Colorado
Heyl, Allen V.
-
1957
Persistent link: https://www.econbiz.de/10000315703
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3
Chromite and other mineral deposits in serpentine rocks of the Piedmont upland, Maryland, Pennsylvania and Delaware
Pearre, Nancy C.
;
Heyl, Allen V.
-
1960
Persistent link: https://www.econbiz.de/10000315717
Saved in:
4
Zinc-Lead-Copper Resources and General Geology of the Upper Mississippi Valley District
Heyl, Allen V.
(
contributor
)
-
1955
Persistent link: https://www.econbiz.de/10001364838
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