MARA, Duncan
Guidelines for the safe use of wastewater and excreta in agriculture and aquaculture: measures for public health protection / [by] Duncan Mara - Geneva World Health Organization 1989 - vii, 187 p.
604.6 / MAR
Guidelines for the safe use of wastewater and excreta in agriculture and aquaculture: measures for public health protection / [by] Duncan Mara - Geneva World Health Organization 1989 - vii, 187 p.
604.6 / MAR