Geology of the Aspen mining district, Colorado, wiht atlas
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Washington, Governmext Printing Office, 1898
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| Series: | Monographs of the United States Geological Survey Vol. 31 |
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| Format: | Book |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=376837 |