Challoner, Jack,  <br/><br/>
Terapung dan tenggelam 

 - 32 pages :   colour illustrations ;   25 cm 
 - Sains mula .
 - Sains mula .
<br/><br/><label>ISBN: </label>9679713083 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science - Study and teaching
<br/><br/><label>Dewey Class. No.: </label>507