"Leng, Ho Peck" <br/><br/>
International Lower Secondary Science Work book – 2 

 - Singapore  Oxford Unversity Press,Marshall Cavendish  2018 
 - 148 
<br/><br/><label>ISBN: </label>9789812808141 
<br/><br/><label>Dewey Class. No.: </label>500  / T-385