The geology of Pennsylvania

The geology of Pennsylvania

4.11 - 1251 ratings - Source

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 ... 4.0 6.8 11.0 .5 54.39 Dark cbestnut-brown ; stalactitic pipes almost obliterated.

Title:The geology of Pennsylvania
Author:Pennsylvania. Bureau of Topographic and Geologic Survey, Henry Darwin Rogers, William Barton Rogers, Leo Lesquereux
Publisher: - 1868


You Must CONTINUE and create a free account to access unlimited downloads & streaming