TY  - RPRT
TI  - GSDIG; a program to determine latitude/longitude location using a microcomputer (IBM-PC or compatible) and digitizer; documentation
AU  - Gary I. Selner
AU  - Cole L. Smith
AU  - Richard B. Taylor
PY  - 1988
DO  - 10.3133/ofr8814a
UR  - https://pubs.usgs.gov/publication/ofr8814A
ID  - ofr8814A
ER  -