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1. Maps. Market area boundaries. R. R. map of U. S. [market area boundaries]. Scale 1: 2,500,000, approximately 40 m.=1 in.

Corporate/Agency Authors:: National Bituminous Coal Commission and Interior Department
Publisher:: National Bituminous Coal Commission
Date:: Oct. 1935 [published 1938]
SuDoc number:: I 34.7:M 34/sh.1-6