TY  - BOOK
AU  - Sharieff Afzal
AU  -  Mohan Rao Ram Ed
TI  - Geographic information systems :  Theory and practice   
SN  - 8170337143
U1  - U:(D6,9(B), P2 
PY  - 2002///
CY  - Jaipur
PB  - Rawat Publications         
KW  - Geography irt Computer Science
ER  -