TY - RPRT TI - Potential-field geophysical programs for IBM compatible microcomputers, version 1.0; executable code, programs A-G AU - Richard H. Godson AU - Margaret R. Mall PY - 1989 DO - 10.3133/ofr89197b UR - https://pubs.usgs.gov/publication/ofr89197B ID - ofr89197B ER -