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- Corporate/Agency Authors:
- Aeronautics Branch and Commerce Department
- Publisher:
- Aeronautics Branch
- Date:
- Mar. 31, 1928
- SuDoc number:
- C 23.8:21/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Mar. 27, 1928
- SuDoc number:
- C 21.5/a 2:368/4
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Mar. 24, 1928
- SuDoc number:
- C 22.8/a:Su 5/926
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- Mar. 20, 1928
- SuDoc number:
- C 3.20:927-28/10
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Mar. 20, 1928
- SuDoc number:
- C 21.5/a 2:368/3
- Corporate/Agency Authors:
- Coast and Geodetic Survey and Commerce Department
- Publisher:
- Coast and Geodetic Survey
- Date:
- Mar. 17, 1928
- SuDoc number:
- C 4.7/2:925/supp.3
- Corporate/Agency Authors:
- Aeronautics Branch and Commerce Department
- Publisher:
- Aeronautics Branch
- Date:
- Mar. 15, 1928
- SuDoc number:
- C 23.8:41
- Corporate/Agency Authors:
- Aeronautics Branch and Commerce Department
- Publisher:
- Aeronautics Branch
- Date:
- Mar. 15, 1928
- SuDoc number:
- C 23.8:6/3
- Corporate/Agency Authors:
- Aeronautics Branch and Commerce Department
- Publisher:
- Aeronautics Branch
- Date:
- Mar. 15, 1928
- SuDoc number:
- C 23.8:8/2
- Corporate/Agency Authors:
- Aeronautics Branch and Commerce Department
- Publisher:
- Aeronautics Branch
- Date:
- Mar. 15, 1928
- SuDoc number:
- C 23.11:1