TY  - RPRT
TI  - GIRAS; a geographic information retrieval and analysis system for handling land use and land cover data
AU  - W.B. Mitchell
AU  - S.C. Guptill
AU  - Kirk E. Anderson
AU  - R.G. Fegeas
AU  - C.A. Hallam
PY  - 1977
DO  - 10.3133/pp1059
UR  - https://pubs.usgs.gov/publication/pp1059
ID  - pp1059
ER  -