TY - RPRT TI - Preliminary simple Bouguer gravity map of the Charlotte 1° x 2° quadrangle, North Carolina and South Carolina AU - Frederick A. Wilson AU - David L. Daniels PY - 1980 DO - 10.3133/ofr80311 UR - https://pubs.usgs.gov/publication/ofr80311 ID - ofr80311 ER -