TY  - BOOK
AU  - Gorr, Wilpen L.
AU  - Kurland, Kristen S.
TI  - Learning and using geographic information systems
SN  - 9788131507605
U1  - 910.285 21st ed.
PY  - 2009///
CY  - Australia
PB  - Cengage Learning
KW  - Geographic information systems
N1  - 254-61 includes index
ER  -