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Start Over Author Commerce Department Sudoc Stem I 28.7

1. Coal. Directions for sampling coal for shipment or delivery, by George S. Pope; revised by N. H. Snyder.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: 1933
SuDoc number:: I 28.7:133/3

2. Coal. Methods of analyzing coal and coke, by F. M. Stanton and A. C. Fieldner; revised by W. A. Selvig.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: Edition of 1929. 1929
SuDoc number:: I 28.7:8/4

3. Explosives. Effect of stemming on efficiency of explosives, by Walter O. Snelling and Clarence Hall; revised by S. P. Howell and J. E. Tiffany.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: [3d edition.] [Mar.] 1928
SuDoc number:: I 28.7:17/3