1. Water pollution control research series. DAST-4. Crazed resin nitration of combined sewer overflows, self-adjusting and self cleaning filter feasibility study [with list of references]; by Hercules Incorporated, Allegany Ballistics Laboratory. Bookmark Corporate/Agency Authors: Federal Water Quality Administration and Interior Dept. Publisher: Federal Water Quality Administration Date: Oct. 1968 SuDoc number: I 67.13/4:(nos.)