TY  - BOOK
AU  - DEMERS Michael N
TI  - Fundamentals of geographic information systems
SN  - 9788126537211
U1  - U:(D6,9(B), M5;P9 
PY  - 2009///
CY  -  New Delhi 
PB  - Wiley India        
KW  - Geography
N1  - Bibliography: p 308-317
ER  -