Structure, coal thickness, and overburden thickness of the Wall Coal Resource Unit, west half of the Birney 30ʹ x 60ʹ quadrangle, Big Horn and Rosebud counties, Montana /
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| Other Authors: | , |
| Format: | Government Document Map |
| Language: | English |
| Published: |
Reston, Va. :
The Survey ;
1987.
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| Series: | Coal investigations ;
map C-111. |
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| Item Description: | Relief shown by contours and spot heights. Includes text, bibliography, index map, and correlation diagrams. Cartographic material. |
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| Physical Description: | 2 maps on 1 sheet : color ; 56 x 39 cm., on sheet 86 x 101 cm., folded in envelope 30 x 25 cm. |