Report on air quality in Malaysia / 
as monitored by the Malaysian Meteorological Service. 
 - Petaling Jaya :  Perkhidmatan Kajicuaca Malaysia,  1995. 
 - v. :  ill. ;  30 cm. 
 - Technical note  no. 55;  no. 57 .
<br/><br/> PTSL : 1994, 1995