The geology of Pennsylvania: a government survey : with a general view of the geology of the United States, essays on coal-formation and its fossils, and a description of the coal-fields of North America and Great Britain

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• 主题词：Geology Coal
• 责任者：Rogers ; Henry Darwin
• 责任方式：Edited
• 出版者：W. Blackwood and Sons
• 出版年：1900
• 出版地：Berlin
• 出版日期：1900/1/1 0:00:00
• 分类号：254.2
• 语言：English

摘要

The whole region from the Southern part of the Atlantic Slope to the Northern border of the State may be viewed in a broad light, as composed of two great systems of crust-undulations.