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- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Apr. 25, 1931
- SuDoc number:
- C 22.8/a:T 49/929
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Apr. 23, 1931
- SuDoc number:
- C 22.8/a:Sa 56/929
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Apr. 21, 1931
- SuDoc number:
- C 21.5/a 2:405/3
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Apr. 20, 1931
- SuDoc number:
- C 22.8/a:G 563/10/929
- Corporate/Agency Authors:
- Standards Bureau and Commerce Department
- Publisher:
- Standards Bureau
- Date:
- 5th edition. Apr. 20, 1931
- SuDoc number:
- C 13.12/1:31/5th ed.
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- Apr. 14, 1931
- SuDoc number:
- C 3.21:930-931/8
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Apr. 14, 1931
- SuDoc number:
- C 21.5/a 2:405/2
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- Apr. 11, 1931
- SuDoc number:
- C 3.25:930-931/8
- Corporate/Agency Authors:
- Standards Bureau and Commerce Department
- Publisher:
- Standards Bureau
- Date:
- Apr. 11, 1931
- SuDoc number:
- C 13.12/1:117
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Apr. 7, 1931
- SuDoc number:
- C 21.5/a 2:405/1