Annual report / 
Pollution Control Department 
 - Singapore :  Pollution Control Dept., Ministry of the Environment,  [1991- 
 - v. :  ill. ;  30 cm. 
<br/><br/> Title from cover  PTSL: 1990 
<br/><br/><label>ISBN: </label> Hadiah 
<br/><br/><label>ISSN: </label>0218-043X 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Singapore. Pollution Control Dept. --Periodicals
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution--Singapore--Periodicals