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Refined by: author/creator: Duffield, Wendell A remove
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Tapping the earth's natural heat / by Wendell A. Duffield, John H. Sass, and Michael L. Sorey.

Wendell A Duffield J. H Sass (John Harvey), 1937-

Washington : U.S. G.P.O. 1994

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2
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Tapping the earth's natural heat / by Wendall A. Duffield, J. H. Sass, and M. L. Sorey.

Wendell A. Duffield [author] M. L. Sorey [author]

Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey 1994

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3
Geothermal energy : clean power from the Earth's heat / by Wendell A. Duffield and John H. Sass.
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Geothermal energy : clean power from the Earth's heat / by Wendell A. Duffield and John H. Sass.

Wendell A Duffield J. H Sass (John Harvey), 1937-

Menlo Park, Calif. : U.S. Geological Survey ; Denver, CO : Available from U.S. Geological Survey Information Services distributor 2003

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4
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The Geothermal Research Program of the U.S. Geological Survey / by Wendell A. Duffield and Marianne Guffanti.

Wendell A. Duffield [author] Marianne Guffanti [author]

Reston, Virginia : United States Department of the Interior, Geological Survey 1982

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by this author/creator:

  1. Duffield, Wendell A.
  2. Sorey, M. L
  3. Sass, J. H. (John Harvey)
  4. Guffanti, Marianne
  5. Sass, J. H.| (John Harvey)

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