Gupta ,Raj Kumar <br/><br/>
Planning natural resources : a handbook of aerospace techniques for integrated surveys and studies in natural resource ecology 
Raj Kumar Gupta 
 - New Delhi  Navyug  1971 
 - ii ,269p. :ill. ;25cm. 
<br/><br/><label>Dewey Class. No.: </label>574.5  / GUP