TY  - BOOK
AU  - Heywood, Ian
AU  - Cornelius, Sarah Carver, Steve
TI  - An introduction to geographical information systems
SN  - 9788131731932
U1  - 910.285 HEY 
PY  - 2017///
CY  - India
PB  - Pearson
KW  - An Introduction to Geographical Information Systems
ER  -