1. AWWA Water Operator Field Guide (Required)
    Author: American Water Works Associati
    2nd edition ISBN 9781583219041
    New Retail Price: 107.00, Used Retail Price: 80.25. This is not a Rental Title.
  2. AWWA Wastewater Operator Field Guide (Recommended)
    Author: Awwa
    ISBN 9781583213865
    New Retail Price: 107.00, Used Retail Price: 80.25. This is not a Rental Title.