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- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Feb. 19, 1930
- SuDoc number:
- C 22.8/a:B 239/928
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Feb. 18, 1930
- SuDoc number:
- C 21.5/a 2:391/3
- Corporate/Agency Authors:
- Standards Bureau and Commerce Department
- Publisher:
- Standards Bureau
- Date:
- Feb. 17, 1930
- SuDoc number:
- C 13.10:104
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Feb. 17, 1930
- SuDoc number:
- C 22.8/a:Z 66/928
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- Feb. 14, 1930
- SuDoc number:
- C 3.21:929-930/6
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Feb. 14, 1930
- SuDoc number:
- C 22.8/a:L 469/928
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Feb. 14, 1930
- SuDoc number:
- C 22.8/a:St 72/928
- Corporate/Agency Authors:
- Census Bureau and Commerce Department
- Publisher:
- Census Bureau
- Date:
- Feb. 13, 1930
- SuDoc number:
- C 3.25:929-930/6
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Feb. 13, 1930
- SuDoc number:
- C 22.8/a:P 566/928
- Corporate/Agency Authors:
- Mines Bureau and Commerce Department
- Publisher:
- Mines Bureau
- Date:
- Feb. 13, 1930
- SuDoc number:
- C 22.8/a:Sa 56/928