1. Water Treatment Operations (Required)
   2nd edition
   ISBN: 9781482224214
   Author: Spellman
   Estimated Price: $125.00 (new)
   New Retail Price: 125.00, Used Retail Price: 93.75, New Rental Fee: 93.75, Used Rental Fee: 50.00.
2. Mathematics Manual for Water & Wastewater ...Math (Required)
   2nd edition
   ISBN: 9781482224283
   Author: Spellman
   Estimated Price: $125.00 (new)
   New Retail Price: 125.00, Used Retail Price: 93.75, New Rental Fee: 93.75, Used Rental Fee: 50.00.