TY - RPRT TI - Potential-field geophysical programs for VAX 7xx computers; source code (programs H-P) AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1989 DO - 10.3133/ofr89115c UR - https://pubs.usgs.gov/publication/ofr89115C ID - ofr89115C ER -