TY - RPRT TI - Potential-field geophysical programs for IBM compatible microcomputers version 1.0; source code, programs A-R AU - Richard H. Godson AU - Margaret R. Mall PY - 1989 DO - 10.3133/ofr89197e UR - https://pubs.usgs.gov/publication/ofr89197E ID - ofr89197E ER -