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- Corporate/Agency Authors:
- Public Roads and Rural Engineering Office and Agriculture Department
- Publisher:
- Public Roads and Rural Engineering Office
- Date:
- May 10, 1917
- Corporate/Agency Authors:
- Public Roads and Rural Engineering Office and Agriculture Department
- Publisher:
- Public Roads and Rural Engineering Office
- Date:
- Sept. 1, 1916, revised Apr. 28, 1917. 1917
- Corporate/Agency Authors:
- Public Roads and Rural Engineering Office and Agriculture Department
- Publisher:
- Public Roads and Rural Engineering Office
- Date:
- Apr. 23, 1917
- Corporate/Agency Authors:
- Public Roads and Rural Engineering Office and Agriculture Department
- Publisher:
- Public Roads and Rural Engineering Office
- Date:
- Apr. 23, 1917
- Corporate/Agency Authors:
- Public Roads and Rural Engineering Office and Agriculture Department
- Publisher:
- Public Roads and Rural Engineering Office
- Date:
- Apr. 23, 1917
- Corporate/Agency Authors:
- Public Roads and Rural Engineering Office and Agriculture Department
- Publisher:
- Public Roads and Rural Engineering Office
- Date:
- Apr. 21, 1917
- Corporate/Agency Authors:
- Public Roads and Rural Engineering Office and Agriculture Department
- Publisher:
- Public Roads and Rural Engineering Office
- Date:
- Apr. 5, 1917
- Corporate/Agency Authors:
- Public Roads and Rural Engineering Office and Agriculture Department
- Publisher:
- Public Roads and Rural Engineering Office
- Date:
- Revised Mar. 6, 1917. 1917
- Corporate/Agency Authors:
- Public Roads and Rural Engineering Office and Agriculture Department
- Publisher:
- Public Roads and Rural Engineering Office
- Date:
- Revised Mar. 1917. 1917
- Corporate/Agency Authors:
- Public Roads and Rural Engineering Office and Agriculture Department
- Publisher:
- Public Roads and Rural Engineering Office
- Date:
- Feb. 21, 1917