@misc{indiciae5c072dcbed11, title = {Triangulation and primary traverse, 1916-1918.:Triangulation and primary traverse in North Carolina, 1918}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1923}, doi = {10.3133/b709r}, url = {https://pubs.usgs.gov/publication/b709R}, note = {Source identifier: b709R} }