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Triangulation and primary traverse, 1916-1918, [by] C.H. Bi.. 

United States congressional serial set ; serial set no. 7825;House document / 66th Congress, 3rd session. House ; no. 830
Birdseye, Claude Hale , 1921
Link: http://docs.newsbank.com/select/serialset/11B0EC6E1CB3..