Sharma , B. K <br/><br/>
Improvising science teaching kits for school : 
B. K. Sharma and B. I. Bukhalov 
 - ii :  N C E R T ,  1972 
 - 107 p. :  24 cm 
<br/><br/><label>ISBN: </label> PB 
<br/><br/><label>Dewey Class. No.: </label>507.2