@misc{indiciae5e11fd5fca40, title = {UTM grid declination and mil equivalents for center of quadrangle, coterminous United States}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1978}, doi = {10.3133/70098474}, url = {https://pubs.usgs.gov/publication/70098474}, note = {Source identifier: 70098474} }