TY  - BOOK
AU  - Lo,C.P., Yeung, Albert K.W.
AU  - Clarke,Keith C.
TI  - Concepts and techniques of geographic information systems: x
SN  - 8120322304
U1  - 910.9/L795c 
PY  - 2003///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Geographic information systems
KW  - Geography
N1  - Includes
ER  -