Pengenalan konsep kitar hayat / 
editor Amir Hamzah Sharaai. 
 - 149 pages :  illustrations ;  21 cm. 
<br/><br/><label>ISBN: </label>9789834903848  RM17.10 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental risk assessment.<br/>Environmental sciences.