TY  - BOOK
AU  - Lo, C.P. 
AU  - Yeung, Albert K. W.
TI  - Concepts and techniques of geographic information systems
SN  - 9788120322301
U1  - 910.285 L78c 
PY  - 2002///
CY  - New Delhi
PB  - Prentice-Hall
KW  - Geographic information systems
KW  - Geoinformations system
ER  -