Lo, C P. Concepts and techniques of geographic information systems / C.P. Lo and Albert K.W. Yeung. - / . - New Delhi : Prentice Hall of India , 2003. - xi,477p. : ills,figs ; 28cm . Include index ISBN: 8120322304 Rs. 375.00 Subjects--Index Terms: GEOGRAPHIC INFORMATION SYSTEM Dewey Class. No.: 910.285 / LO/C