TY - RPRT TI - GSPOST version 3.0 : a program to plot symbols and post numerical data from ASCII tables providing geodetic or cartesian coordinates using an IBM PC (or compatible) microcomputer and plotter AU - Gary I. Selner AU - Cole L. Smith AU - Richard B. Taylor PY - 1990 DO - 10.3133/ofr90269a UR - https://pubs.usgs.gov/publication/ofr90269A ID - ofr90269A ER -