Singh Ladli Charan <br/><br/>
" Construction of a test of understanding of the scientific principles and their applications in daily life for the students of delta class in Delhi higher secondary schools" 

 -  1958 
 - 48p. 
<br/><br/><br/>M. Ed. Dissertations, 1958 (Delhi University) 
<br/><br/><label>Source: </label>Dissertations