TY  - BOOK
AU  - Gupta,Raj Kumar
TI  - Planning natural resources : Handbook of aerospace techniques for integrated surveys and studies in natural resource ecology
U1  - 338.9 GUR 
PY  - 1971///.
CY  - New Delhi : 
PB  - Navayug, 
KW  - Aerial photography
KW  - Natural resources
KW  - Photographic interpretation
ER  -