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WEF Wastewater Reference Guide
111.09
ACRP Wastewater and Water Reference Guide
64.64
106.04
ACRP Chlorine Reference Guide
57.57
WEF Water Reference Guide
166.64
ACRP Wastewater Reference Guide
42.93
ACRP Cave-In Protection & Competent Person Training Manual
39.39
WEF Biosolids Land Appliers’ Guide to Preparing for the Certification Examination Reference Guide
146.35
WEF Utility Reference Guide
126.24
AWWA AWWA Wastewater Operator Field Guide Reference Guide
107.0
AWWA Water Rates, Fees, and the Legal Environment, Second Edition Reference Guide
134.0
48.48
WEF Water Reuse Systems Reference Guide
WEF Collection Systems Operators’ Guide to Preparing for the Certification Examination Reference Guide
104.99
CSUS Membrane Bioreactors
114.25
WEF Facility Owners and Practitioners Reference Guide
149.47
CSUS null
153.85
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WEF Water Resource Recovery Facilities Reference Guide
99.99
66.66
AWWA Basic Chemistry for Water & Wastewater Operators Reference Guide
96.0