Subject: Bituminous coal - Yale University Library GeoBlacklight Search Results

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1. General map of the bituminous coal region in western Pennsylvania : showing the position of the collieres

1907. 2013-03-21T18:32:10Z. 2018-11-16T22:37:02Z. Halberstadt, Baird, 1860-1934, cartographer. Baird Halberstadt. English. cartographic image. Public. Pennsylvania.

2. Grand atlas. contains thirty two sheets relating to portions of the petroleum and bituminous coal fields and three sheets relating to the Quaternary Period : 1885 / [cartographic material] : Division III, Petroleum and bituminous coal fields, Part I

1885. 2012-03-14T13:27:17Z. 2012-07-11T15:16:54Z. Geological Survey of Pennsylvania. Second Geological Survey of Pennsylvania. English. Public. Pennsylvania. Quaternary.