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; C, Source code disk
AU  - Gary I. Selner
AU  - Richard B. Taylor
PY  - 1987
DO  - 10.3133/ofr87496c
UR  - https://pubs.usgs.gov/publication/ofr87496C
ID  - ofr87496C
ER  -