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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.5/a 4:490/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.5/a 4:496/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.5/a 4:493/1
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- [1938.]
- SuDoc number:
- C 13.22/a:1137
- Corporate/Agency Authors:
- Fisheries Bureau and Commerce Department
- Publisher:
- Fisheries Bureau
- Date:
- 1938
- SuDoc number:
- C 6.12:37
- Corporate/Agency Authors:
- Fisheries Bureau and Commerce Department
- Publisher:
- Fisheries Bureau
- Date:
- [1938.]
- SuDoc number:
- C 6.5:1279
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- 1938
- SuDoc number:
- C 13.12/1:41/2
- Corporate/Agency Authors:
- Foreign and Domestic Commerce Bureau and Commerce Department
- Publisher:
- Foreign and Domestic Commerce Bureau
- Date:
- [1938.]
- SuDoc number:
- C 18.194:2/11
- Corporate/Agency Authors:
- Foreign and Domestic Commerce Bureau and Commerce Department
- Publisher:
- Foreign and Domestic Commerce Bureau
- Date:
- [1938.]
- SuDoc number:
- C 18.194:2/12
- Corporate/Agency Authors:
- Foreign and Domestic Commerce Bureau and Commerce Department
- Publisher:
- Foreign and Domestic Commerce Bureau
- Date:
- [1938.]
- SuDoc number:
- C 18.194:2/7