Author:

Cross,A.T.

Year:

1952

Title:

The geology of the Pittsburgh Coal: Stratigraphy, petrology, origin and composition, and geologic interpretation of mining problems.

Reference:

Cross,A.T. (1952) The geology of the Pittsburgh Coal: Stratigraphy, petrology, origin and composition, and geologic interpretation of mining problems. Conference on the Origin and Constitution of Coal,Proceedings,2nd.Nova Scotia Research Foundation,Halifax,1952 P. 32- 99

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