TY  - BOOK
ED  - Environmental Systems Research Institute (Redlands, California)
TI  - Understanding GIS: the ARC/INFO method : self study workbook : version 7.1 for UNIX and Windows NT 
SN  - 1862420335
AV  - G70.2 U53 1997
U1  - 910/.285 20
PY  - 1997///
CY  - Cambridge
PB  - GeoInformation International
KW  - ARC/INFO (Programa para computadora)
KW  - Sistemas de información geográfica
ER  -