TY  - BOOK
AU  - Nayar, N.B..
TI  - Encyclopaedia of survein,mapping and remote sensing / 
SN  - 81-7033-310-6
U1  - U12k 
PY  - 1993///
CY  - Jaipur : 
PB  - Rawat Publications , 
KW  - Remote Sensing
ER  -