Rogalla, F. Biofilm reactors Proceedings /ed. by F Rogalla, P Harremoes - Oxford Pergamon 1994 - 547p,incl.bibl. - Water Science and Technology V.29 Nos 10/11 . ISBN: 0080425445 Subjects--Index Terms: International Association on Water Quality Dewey Class. No.: 628.1605 / N72.29.8 "SER"