TY  - RPRT
TI  - GSMDATUM and GSPDATUM, programs for DOS microcomputers to convert data in GSMAP or GSPOST format between the NAD27 and NAD 83 coordinate systems
AU  - G.I. Selner
AU  - R. B. Taylor
PY  - 1993
DO  - 10.3133/ofr93536
UR  - https://pubs.usgs.gov/publication/ofr93536
ID  - ofr93536
ER  -