TY  - BOOK
AU  - Heywood, Ian et. al.
TI  - An introduction to geographical information systems
SN  - 9788131731932
U1  - 910.285 HEY 
PY  - 2010///
CY  - Noida
PB  - Pearson
KW  - Geographic information systems
N1  - Lending
ER  -