TY  - BOOK
AU  - Heywood, Ian
AU  - Cornelius, Sarah
AU  - Carver, Steve
TI  - An introduction to geographical information systems
SN  - 9780273722595
U1  - 910.285 
PY  - 2011///
CY  - Esssex
PB  - Pearson
KW  - Geographic information systems
N1  - 1 USD = Rs. 196.03 as at 2021-02-05
USD 51.14 = Rs. 10,024.97
ER  -