TY  - BOOK
AU  - Lo, C.P.
AU  - Yeung, Albert K.W.
TI  - Concepts and techniques of Geographic information systems
SN  - 81-203-2230-4
U1  - 910 
PY  - 2005///
CY  - New Delhi
PB  - PHI
KW  - Geography
KW  - Information system
ER  -