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1. The Beginnings of coal.

Creator Personal:
Janssen, Raymond E.
Title:
The Beginnings of coal.
Call Number:
P3561
Date:
1948
Description:
Journal article reprint from: Scientific American, 1948:July.
Subject Topical:
Coal--United States--History., Mines and mineral resources--United States--History.
All:
Coal--United States--History., Mines and mineral resources--United States--History.