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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Feb. 28, 1928
- SuDoc number:
- C 21.5/a 2:367/4
- Corporate/Agency Authors:
- Aeronautics Branch and Commerce Department
- Publisher:
- Aeronautics Branch
- Date:
- Feb. 25, 1928
- SuDoc number:
- C 23.8:5/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Feb. 21, 1928
- SuDoc number:
- C 21.5/a 2:367/3
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- Feb. 14, 1928
- SuDoc number:
- C 3.21:927-28/6
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Feb. 14, 1928
- SuDoc number:
- C 21.5/a 2:367/2
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Feb. 13, 1928
- SuDoc number:
- C 22.8/a:Se 24/926
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- Feb. 11, 1928
- SuDoc number:
- C 3.25:927-28/6
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Feb. 11, 1928
- SuDoc number:
- C 22.8/a:Sa 56/926
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Feb. 10, 1928
- SuDoc number:
- C 22.8/a:G 563/3/926
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Feb. 7, 1928
- SuDoc number:
- C 21.5/a 2:367/1