Kalra, R.M <br/><br/>
Technology of teaching elementary science in 21st century:   with special reference to the developing countries, 
R.M. Karla 
 - New Dehli:  Sterling Publisher ltd.  c1996 
 - viii, 128p.;  ill.  23cm. 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>8120716485 
<br/><br/><label>Subjects--Topical Terms: </label>--Elementary school science--Developing countries--Technology of teaching
<br/><br/><label>Dewey Class. No.: </label>372.3 KAL