Search Results       Your search for [subject]Sewage sludge disgestion returned 1 record.           Wastewater stabilization ponds : principles of planning & practice. Alexandria: World Health Organization, Regional Office for the Eastern Mediterranean, 1987. Subject: Sewage lagoons; Sewage -- Purification; Sewage sludge disgestion; Land treatment of wastewater.          Add to Book Cart Relevance: 32.28%