TY  - BOOK
AU  - Heywood,Ian
AU  - Carver ,And Steve
AU  - Cornelius ,Sarah
TI  - Introduction to Geographical Information Systems
SN  - 0130611980
U1  - 910.285 
PY  - 2002///
CY  - London
PB  - Prentice Hall
KW  - Data analysis
ER  -