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Geochemical prospecting for Zinc, Lead, Copper, and Silver, Lancaster Valley, Southeastern Pennsylvania / By Jacob Freedman.

By: FREEDMAN, Jacob.
Material type: materialTypeLabelBookSeries: Geological Survey Bulletin; 1314-C.Publisher: Washington : United States Government Printing Office, 1972Description: 49 p. + 1 plan. pleg. --.Content type: Texto (visual) Media type: sin mediación Subject(s): Geoquímica | Pennsylvania
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