TY  - BOOK
AU  - Lo, C. P.
AU  - Yeung, Albert K. W.
TI  - Concepts and techniques of Geographic information systems
SN  - 9788120322301
U1  - 910.285 
PY  - 2002///
CY  - New Delhi
PB  - Prentice Hall
KW  - Geographic information systems
KW  - GIS
ER  -