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1. Coal. Preliminary estimates of production of Pennsylvania anthracite and of coke, June 1943.

Corporate/Agency Authors:: Mines Bureau, Indian Affairs Office, and Interior Department
Publisher:: Mines Bureau
Date:: [1943.]
SuDoc number:: I 28.50:943/6

2. Coal. Preliminary estimates of production of Pennsylvania anthracite and beehive coke, Jan. 1938.

Corporate/Agency Authors:: Mines Bureau and Indian Affairs Office
Publisher:: Mines Bureau
Date:: Feb. 5, 1938
SuDoc number:: I 28.50:938/1