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- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Jan. 7, 1931
- SuDoc number:
- C 22.8/a:B 239/929
- Corporate/Agency Authors:
- Standards Bureau and Commerce Department
- Publisher:
- Standards Bureau
- Date:
- Jan. 7, 1931
- SuDoc number:
- C 13.12/1:116
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Jan. 6, 1931
- SuDoc number:
- C 21.5/a 2:402/1
- Corporate/Agency Authors:
- Standards Bureau and Commerce Department
- Publisher:
- Standards Bureau
- Date:
- Jan. 6, 1931
- SuDoc number:
- C 13.4:389
- Corporate/Agency Authors:
- Radio Division and Commerce Department
- Publisher:
- Radio Division
- Date:
- [Jan. 2, 1931.]
- SuDoc number:
- C 24.2:L 61/931
- Corporate/Agency Authors:
- Lighthouses Bureau and Commerce Department
- Publisher:
- Lighthouses Bureau
- Date:
- 1931
- SuDoc number:
- C 9.30:931
- Corporate/Agency Authors:
- Lighthouses Bureau and Commerce Department
- Publisher:
- Lighthouses Bureau
- Date:
- 1931
- SuDoc number:
- C 9.46:931
- Corporate/Agency Authors:
- Lighthouses Bureau and Commerce Department
- Publisher:
- Lighthouses Bureau
- Date:
- 1931, corrected to Jan. 1, 1931
- SuDoc number:
- C 9.19:931
- Corporate/Agency Authors:
- Lighthouses Bureau and Commerce Department
- Publisher:
- Lighthouses Bureau
- Date:
- 1931
- SuDoc number:
- C 9.42:931
- Corporate/Agency Authors:
- Lighthouses Bureau and Commerce Department
- Publisher:
- Lighthouses Bureau
- Date:
- 1931
- SuDoc number:
- C 9.17:931