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Bureau of Mines / Minerals yearbook area reports: domestic 1986
(1986)
Prosser, L. J., Jr.; Berkheiser, S.W., Jr.
Pennsylvania, pp. 407-[418]
Page 407
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As a work of the United States government, this material is in the public domain.| For information on re-use see: http://digital.library.wisc.edu/1711.dl/Copyright




