E-book Nitrification and Denitrification in the Activated Sludge Process Michael H. Gerardi ISBN: 978-0-471-46131-9 E-book 208 pages April 2003 US $59.99 Purchase This E-book This price is valid for United States. Change location to view local pricing and availability. Important E-book Information Adobe e-books are read using Adobe Digital Editions. Install Adobe Digital Editions on your PC in order to read or transfer your e-book. Buy from another retailer for your e-book reader Amazon Google Play Other Available Formats: Paperback