00736nam a22001817a 4500 BD-DhUL 20151129080135.0 151129s200907 bg a|||| m||| 00| 0|eng d BD-DhUL BD-DhUL 628.162 IMP Impact of ammonia contamination on surface water treatment processes and its removal from polluted river water by aquatic macrophytes and nitrifying bacteria / [PhD Thesis] Dhaka : University of Dhaka , 2009. Various pagins : ill. (some col.) ; 29 cm. Thesis (PhD)--Department of Microbiology, Universxity of Dhaka, 2005-06. Includes bibliographical references and index . Water pollution. ddc REF 43463 43463 0 0 ddc 0 628_162000000000000_IMP 1 REF 70612 DUSL DUSL REF 2015-11-29 Gift 628.162 IMP 448779 2015-11-29 2015-11-29 REF