TY - BOOK AU - Rao, M. Narayana. AU - Datta, Amal K. TI - Waste water treatment : : rational methods of design and industrial practices SN - 8120402154 U1 - 628.3 RAO 23 PY - 1987/// CY - New Delhi PB - Oxford & IBH Pub. KW - Sewege -- Purification N1 - Includes index ER -