TY  - RPRT
TI  - GSDRAW and GSMAP version 4.0; prototype programs for the IBM PC and compatible microcomputers to assist compilation and publication of geologic maps and illustrations; D, Executable utility program disks
AU  - Gary I. Selner
AU  - Richard B. Taylor
PY  - 1987
DO  - 10.3133/ofr87496d
UR  - https://pubs.usgs.gov/publication/ofr87496D
ID  - ofr87496D
ER  -