Essays by young Scientists : 
National council of Educational Research and Training Department of Scicece Education, New Delhi, India 
 - New Delhi :  NCERT ,  1964 
 - Vi, 59 p. :  20 cm. 
 - Science of the Science talent search Examination, 1964 ; .
<br/><br/> Contestants of the science talent search Examination, 1964 
<br/><br/><label>Dewey Class. No.: </label>504