TY  - BOOK
ED  - Environmental Systems Research Institute
TI  - Understanding GIS: the ARC/INFO method;self study workbook 
SN  - 1879102005
AV  - G70.2 .U53 1990
U1  - 005.3 
PY  - 1990///
CY  - California
PB  - Environmental Systems Research Institute
KW  - Computer software
KW  - Gis
KW  - Geographic information systems
ER  -