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Special report on the petroleum of Pennsylvania : its production, transportation, manufacture and statistics. / By Henry E. Wrigley ... To which are added a map and profile of a line of levels through Butler, Armstrong and Clarion counties. By D. Jones Lucas. And also a map and a profile of a line of levels along Slippery Rock creek. By J. P. Lesley.
LIBRA TN72.P4 W7 1875
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