Knopf, A. (1913) Ore Deposits of the Helen Mining Region, Montana. United States Geological Survey, Bulletin 527, 143 pages.
Reference Type | - plain text - | ||
---|---|---|---|
Year | 1913 | ||
Original Entry | Knopf, A. (1913) Ore Deposits of the Helen Mining Region, Montana. United States Geological Survey, Bulletin 527, 143 pages. | ||
Mindat Ref. ID | 16090743 | Long-form Identifier | mindat:1:5:16090743:4 |
GUID | 3ea9c141-b30f-4ebe-9390-31baeb1d8725 | ||
Full Reference | Knopf, A. (1913) Ore Deposits of the Helen Mining Region, Montana. United States Geological Survey, Bulletin 527, 143 pages. | ||
Plain Text | Knopf, A. (1913) Ore Deposits of the Helen Mining Region, Montana. United States Geological Survey, Bulletin 527, 143 pages. |
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