Supplementary reader on persistent bio - accumulative and toxic chemicals :  project on environmentally sound management and disposal of PCBs wastes and PCBs contaminated equipment in Sri Lanka / 

 - Battaramulla :  Ministry of Environment,  2022. 
 - ix, 184 p. 
<br/><br/><label>ISBN: </label>9786245817238 
<br/><br/><label>Dewey Class. No.: </label>363.1791  / SUP