General science handbook of activities, classes VI-VIII 
/ National Council of Educational Research and Training 
 - New Delhi:   National Council of Educational Research and Training,   1964 
 - iv, 458p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Universal Decimal Class. No.: </label>5  / K4;1