Shopping basket > Review order Currently in your basket Before proceeding to checkout you will need you to either login or create an account. Your items will remain in your basket. USDItem TotalReal-Time Water Quality Monitoring Shows Diurnal Variation of Dissolved Oxygen That Contributes to Unsolved Fish Kills (237 words) $11.50RemoveKilling More Than Just PFAS with One Stone (9 words) $11.50RemoveExisting Sewer Evaluation and Rehabilitation - MOP FD6, 3e About WEF (76 words) $0.00RemoveClarifier Design, MOP FD-8, 2nd Edition Chapter 9: Rectangular Clarifiers (27,110 words) $19.00RemoveThird Century of Biochemical Oxygen Demand 8 Respirometric Methods (15,069 words) $17.00RemoveAchieving Energy Neutrality: Setting a Vision and Empowering your Staff (153 words) $11.50RemoveNet total: $70.50VAT: $0.00Gross total: $70.50 Payment info When you click the checkout button, you will be redirected to a secure Paypal page where you can either pay using an existing Paypal account, or pay by card without a Paypal account. Continue shopping We access Visa, Mastercard, Maestro, American Express all through Paypal.