Bhattacharya, P. W. <br/><br/>
Science and technology education through exhibitions / 
P. K. Bhattacharya 
 - New Delhi :  National Council of Educational Research and Training,  1991 
 - X, 270 p. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science and civilization
<br/><br/><label>Dewey Class. No.: </label>507