8 1 10 Kustamar Primary Author Mundra, I Wayan Primary Author mixed material Malang ITN Malang 1999 Fair, Gordon Maskew Primary Author Geyer, John Charles Primary Author Okun, Daniel Alexander Primary Author mixed material New York John Wiley & Sons, Inc. 1981 water_and_waste_water.jpg.jpg Rao, M.N. Primary Author DAtta, A.K. Primary Author mixed material Calcutta OXFORD & IBH PUBLISHING CO. 1979 waste_water_treatment.jpg.jpg Hammer, Mark J. Primary Author Hammer Jr., Mark J. Primary Author mixed material 013197307X Singapura Pearson 2005 010003317.jpg SI Version Hammer, Mark J. Primary Author mixed material 0471028436 New York John Wiley & Sons 1977 010001638.jpg Geyer, John Charles Primary Author Fair, Gordon Maskew Primary Author Okun, Daniel Alexander Primary Author mixed material New York John Wiley & Sons 1966 010011031.jpg Horvath, Imre Primary Author Jolankay, G. Translator mixed material 047194422X Chichester John Wiley & Sons 1994 000013063.jpg Principles and Practice Altmann, Scott Translator Roques, Henri Editor mixed material 1560815183 New York VCH publishers 1996 000004792.jpg