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WEF Water Resource Recovery Facilities Reference Guide
139.37
WEF Wastewater Reference Guide
106.04
WEF Regulatory Compliance Purposes Reference Guide
161.59
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WEF Contemporary Technologies for Shale-Gas Water and Environmental Management Reference Guide
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WEF Wastewater Treatment Plant Reference Guide
146.44
WEF Nutrient Removal Reference Guide
181.79
0.0
WEF Utility Reference Guide
WEF Stormwater Management Reference Guide
127.26
WEF Water Reuse Systems Reference Guide
WEF Engineers, Public Health Officials, Scientists, Utility and Collection Systems Managers Reference Guide
79.79
WEF Collection Systems Operators’ Guide to Preparing for the Certification Examination Reference Guide
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WEF Designers, Operators and Utility Reference Guide
136.35
WEF Water Reference Guide
166.64
WEF Biosolids Land Appliers’ Guide to Preparing for the Certification Examination Reference Guide
146.35