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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Oct. 20, 1931
- SuDoc number:
- C 21.5/a 2:411/3.
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Oct. 16, 1931
- SuDoc number:
- C 22.8/a:C 66/929
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Oct. 16, 1931
- SuDoc number:
- C 22.8/a:Si 34/930
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- Oct. 14, 1931
- SuDoc number:
- C 3.21:931-932/2
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- Oct. 13, 1931
- SuDoc number:
- C 3.25:931-932/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Oct. 13, 1931
- SuDoc number:
- C 21.5/a 2:411/2
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- Oct. 8, 1931
- SuDoc number:
- C 3.20:931-932/3
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Oct. 8, 1931
- SuDoc number:
- C 22.8/a:G 998/930
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Oct. 7, 1931
- SuDoc number:
- C 22.8/a:G 563/5/930
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Oct. 7, 1931
- SuDoc number:
- C 22.8/a:G 76/930