Gan, Seng Chiew (Ed.) <br/><br/>
Buku Darjah Preston Srp Sains Paduan. 

 -  Preston  1982 
<br/><br/><label>ISBN: </label>9679170055 
<br/><br/><label>Dewey Class. No.: </label>BT 507.1 BUK 1982