TY  - BOOK
AU  - Baldev Sahai
AU  -  T.S. Jachhwaha K. V. Ravindran  A. K. Roy
TI  - Proceedings of national symposium on remote sensing for sustainabel development
U1  - 621.3678 
PY  - 1992///
CY  - Lucknow
PB  - Remote sensing applications centre Uttar Pradesh
ER  -