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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1931
- SuDoc number:
- C 21.5/2:930
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1931.]
- SuDoc number:
- C 21.12:929/p.225-228a
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1931.]
- SuDoc number:
- C 21.12:929/errata 930
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1931.]
- SuDoc number:
- C 21.10:P 351/2
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- 1931
- SuDoc number:
- C 3.37/19:P 38
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- 1931
- SuDoc number:
- C 3.37/11:P 38
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- 1931
- SuDoc number:
- C 3.37/12:38
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- 1931
- SuDoc number:
- C 3.37/13:P 38
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- 1931
- SuDoc number:
- C 3.37/5a:P 384
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- 1931
- SuDoc number:
- C 3.37/9:P 38