TY - RPRT TI - DLGGSM : a program to load data from 1:24,000- scale and 1:100,000-scale topographic maps stored in the Digital Line Graph-3 (optional) format into a GSMAP data base, Part A - Documentation AU - Gary I. Selner AU - Gregory N. Green PY - 1990 DO - 10.3133/ofr90459a UR - https://pubs.usgs.gov/publication/ofr90459A ID - ofr90459A ER -