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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- July 14, 1931
- SuDoc number:
- C 21.5/a 2:408/2
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- July 13, 1931
- SuDoc number:
- C 3.25:930-931/11
- Corporate/Agency Authors:
- Standards Bureau and Commerce Department
- Publisher:
- Standards Bureau
- Date:
- July 10, 1931
- SuDoc number:
- C 13.4:394
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- July 9, 1931
- SuDoc number:
- C 22.8/a:B 773/930
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- July 7, 1931
- SuDoc number:
- C 21.5/a 2:408/1
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- July 6, 1931
- SuDoc number:
- C 22.8/a:P 448/929
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- July 6, 1931
- SuDoc number:
- C 22.8/a:Z 66/929
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- July 3, 1931
- SuDoc number:
- C 22.8/a:G 563/8/929
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- July 2, 1931
- SuDoc number:
- C 22.8/a:As 65/929
- Corporate/Agency Authors:
- Aeronautics Branch and Commerce Department
- Publisher:
- Aeronautics Branch
- Date:
- July 1, 1931
- SuDoc number:
- C 23.11:15/4