Search Results       Your search for [subject]Night soil -- Safety measures returned 1 record.           Guidelines for the safe use of wastewater and excreta in agriculture and aquaculture : measures for public health protection. by Mara, D. Duncan (David Duncan), 1944-; Geneva: World Health Organization, 1989. Subject: Sewage -- Safety measures; Sewage irrigation -- Safety measures; Night soil -- Safety measures; Agriculture -- Safety measures.          Add to Book Cart Relevance: 30.19%