- Pumping: Fundamentals for the Water and Wastewater Maintenance Operator by Frank R. Spellman, Joanne Drinan,  2001-01-15
 - Spellman's Standard Handbook for Wastewater Operators: Volume I, Fundamental Level, Second Edition by Frank R. Spellman,  2010-08-30
 - Industrial Wastewater Treatment by Activated Sludge by Derin Orhon, Fatos Germirli Babuna, et all  2009-01-15
 - Standard Methods: For the Examination of Water and Wastewater, 18th Edition by Arnold E. Greenberg,  1992
 - Ecological Planning, Design, & Engineering. Solving Global Water Crises: New Paradigms in Wastewater and Water Treatment. Small and On-Site Systems for Water Self-Sufficiency and Sustainability. by Jo-Shing Yang,  2007-10-20
 - Practical Wastewater Treatment by David L. Russell,  2006-09-12
 - Wastewater Treatment: Biological and Chemical Processes (Environmental Science and Engineering / Environmental Engineering) by Mogens Henze, Poul Harremoes, et all  2010-11-02
 - Water-Quality Trading: A Guide for the Wastewater Community by Cy Jones, Lisa Bacon, et all  2005-10-13
 - Wastewater Operator Certification Study Guide by John Giorgi,  2009-08
 - Safe Work Practices for Wastewater Treatment Plants, Second Edition by Frank R. Spellman,  2000-10-31
 - Water and Wastewater Project Development by Frank Rendell,  1999-01-01
 - Math for Wastewater Treatment Operators Grades 1 & 2 by John Giorgi,  2009-02-18
 - Upgrading Wastewater Treatment Plants, Second Edition (Water Quality Management Library) by Glen T. Daigger,  1998-06-09
 - Small & Decentralized Wastewater Management Systems by Ronald Crites, George Tchobanoglous,  1998-04-02
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