TY  - BOOK
AU  - Lo,C.P.
AU  - Yeung,Albert K.W
TI  - Concepts and techniques of geographic information systems
SN  - 9788120339149
U1  -  910.2 
PY  - 2009///
CY  - New Delhi
PB  - PHI Learning
KW  - Geographic information systems
ER  -