Twentieth annual report of the United States Geological Survey to the secretary of the interior 1898-99 : in seven parts. Part VI (continued), Mineral resources of the United States, 1898, nonmetallic products, except coal and coke /
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| Typ dokumentu: | Kniha |
| Jazyk: |
angličtina |
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Washington :
Government Printing Office,
1899.
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