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 Total10 YEARS OF EXPERIENCES OF AN MBBR PROCESS FOR POST-DENITRIFICATION (220 words) $11.50RemoveImproving Clarifier Models by Describing Extracellular Polymeric Substances (9 words) $11.50RemoveNet total: $23.00VAT: $0.00Gross total: $23.00 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.