TY  - BOOK
AU  - Burrough, Peter A.
ED  - Mc Donald R A
TI  - Principles of geographical information systems
SN  - 9780198748618
U1  - 910.285 BU-P 
PY  - 2015///
CY  - New Delhi
PB  - Oxford university press
KW  - Geographical information systems
ER  -