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 TotalThird Century of Biochemical Oxygen Demand, 2nd Edition 12 Chemical Oxygen Demand (19,034 words) $17.00RemoveMore Than Pretty Pictures: Developing a Utility Strategic Plan That Enhances Public Trust (14 words) $11.50RemoveIndustrial Water Reclamation and Reuse to Minimize Liquid Discharge Chapter 1 Introduction (4,904 words) $32.00RemoveNet total: $60.50VAT: $0.00Gross total: $60.50 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.