Harlen, Wynne. <br/><br/>
UNESCO sourcebook for science in the primary school / 
Wynne Harlen and Jos Elstgeest. 
 - Paris :  UNESCO Publishing,  c 1992. 
 - 271 p. :  ill. ;  25 cm. 
<br/><br/>327  327 
<br/><br/><label>ISBN: </label>92-3-102721-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Primary education.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Bangladesh
<br/><br/><label>Dewey Class. No.: </label>372.7 / H227u