Kaushik, Purshotam <br/><br/>
Ecological and automatical marvels of the Himalayan orchids/ 
Purshotam Kaushik 
 - New Delhi:  Today And Tommorow,  1983. 
 - 123 p. 
<br/><br/><label>Dewey Class. No.: </label>581.5  / KAU/E