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- Corporate/Agency Authors:
- Engineer Department and War Department
- Publisher:
- Engineer Department
- Date:
- Mar. 16, 1939
- Corporate/Agency Authors:
- Engineer Department and War Department
- Publisher:
- Engineer Department
- Date:
- Mar. 1, 1939
- Corporate/Agency Authors:
- Engineer Department and War Department
- Publisher:
- Engineer Department
- Date:
- Feb. 28, 1939
- Corporate/Agency Authors:
- Engineer Department and War Department
- Publisher:
- Engineer Department
- Date:
- [February 1939]
- SuDoc number:
- W 7.1/1:938
- Corporate/Agency Authors:
- Engineer Department and War Department
- Publisher:
- Engineer Department
- Date:
- [February 1939]
- Corporate/Agency Authors:
- Engineer Department and War Department
- Publisher:
- Engineer Department
- Date:
- Jan. 27, 1939
- Corporate/Agency Authors:
- Engineer Department and War Department
- Publisher:
- Engineer Department
- Date:
- Jan. 26, 1939
- Corporate/Agency Authors:
- Engineer Department and War Department
- Publisher:
- Engineer Department
- Date:
- Jan. 24, 1939
- Corporate/Agency Authors:
- Engineer Department and War Department
- Publisher:
- Engineer Department
- Date:
- Jan. 23, 1939
- Corporate/Agency Authors:
- Engineer Department and War Department
- Publisher:
- Engineer Department
- Date:
- Jan. 12, 1939