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- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Dec. 30, 1931
- SuDoc number:
- C 22.8/a:Sl 14/930
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Dec. 29, 1931
- SuDoc number:
- C 21.5/a 2:413/5
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Dec. 24, 1931
- SuDoc number:
- C 22.8/a:Si 39/930
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Dec. 22, 1931
- SuDoc number:
- C 21.5/a 2:413/4
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Dec. 22, 1931
- SuDoc number:
- C 22.8/a:L 629/930
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Dec. 21, 1931
- SuDoc number:
- C 22.8/a:As 65/930
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Dec. 21, 1931
- SuDoc number:
- C 22.8/a:C 468/930
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- Dec. 21, 1931
- SuDoc number:
- C 3.20:931-932/8
- Corporate/Agency Authors:
- Commerce Department
- Publisher:
- Commerce Department
- Date:
- Dec. 17, 1931
- SuDoc number:
- C 1.4:251/18
- Corporate/Agency Authors:
- Commerce Department
- Publisher:
- Commerce Department
- Date:
- Dec. 15, 1931