00652cam a2200205 a 45000010005000000030009000050050017000140080041000310200015000720400028000870820018001151000022001332450120001552500012002752600044002873000047003315000020003786500028003987000020004262641BD-DhUAP20201215115556.0201215s1987    ii a     b    001 0 eng    a8120402154  aDLCcDLCdBD-DhUAPbeng00a628.3 RAO223  aRao, M. Narayana.  aWaste water treatment : brational methods of design and industrial practices /cM. Narayana Rao and Amal K. Datta.  a2nd ed.  aNew Delhi :bOxford & IBH Pub.,cc1987.  aviii, 345 pages :billustrations ;c21 cm.  aIncludes index.  aSewege -- Purification.  aDatta, Amal K.