Sperling, Marcos Von Biological wastewater treatment in warm climate regions Marcos Von Sperling and Carlos Augusto de Lemos Chernicharo - London IWA Publishing 2006 - v.; 25cm. ISBN: 1-84339-002-7 Subjects--Topical Terms: Sewage-Purification-TropicsWater-Purification-Tropics Dewey Class. No.: 628.1620913