TY  - BOOK
AU  - HEYWOOD,Ian
TI  - An introduction to Geographical information Systems
SN  - 81-7758-784-6
AV  - 910.285 
U1  - 910.285 22
PY  - 2006///
CY  - New Delhi
PB  - Pearson Education
KW  - Geography
N1  - Includes References and Index
ER  -