Who will clean the blackboard? 

 - 30 pages :   colour illustrations ;   22 cm 
 - Perintis young science readers series .
 - Perintis young science readers series .
<br/><br/> Book 4 
<br/><br/><label>ISBN: </label>9833024289 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's stories, English.
<br/><br/><label>Dewey Class. No.: </label>823