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Epithermal gold deposits (U.S. Geological Survey bulletin ; 1857-H) (Geology and resources of gold in the United States ; ch. H)

Epithermal gold deposits (U.S. Geological Survey bulletin ; 1857-H) (Geology and resources of gold in the United States ; ch. H)
Microform図書
1990<YCA-I 19.3:1857-H/pt.1>
National Diet Library
  • Author HeadingAshley, Roger P. (Roger Parkmand) , 1940- Geological Survey (U.S.)

Epithermal gold deposits (U.S. Geological Survey bulletin ; 1857) (Geology and resources of gold in the United States ; ch. H-<I>)

Epithermal gold deposits (U.S. Geological Survey bulletin ; 1857) (Geology and resources of gold in the United States ; ch. H-<I>)
Microform図書
1990<YCA-I 19.3:1857-I>
National Diet Library
  • Author HeadingAshley, Roger P. (Roger Parkmand) , 1940- DeWitt, Ed Geological Survey ...

Mineral resources of the Sheep Mountain Wilderness Study Area, Baker County, Oregon / by Roger P. Ashley ... [et al.] (Mineral resources of wilderness study areas--east-central Oregon ; ch. B) (U.S. Geological Survey bulletin ; 1741)

Mineral resources of the Sheep Mountain Wilderness Study Area, Baker County, Oregon / by Roger P. Ashley ... [et al.] (Mineral resources of wilderness study areas--east-central Oregon ; ch. B) (U.S. Geological Survey bulletin ; 1741)
Microform図書
1988<YCA-I 19.3:1741-B>
National Diet Library
  • Author HeadingAshley, Roger P. (Roger Parkmand) , 1940- Geological Survey (U.S.)

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