P. Edwards,
«Reuse of human wastes in aquaculture : a technical review», vol. no. 2. UNDP-World Bank Water and Sanitation Program, Washington, DC, USA, p. xvii, 350 p.: fig., photogr., tab., 1992.
M. B. Pescod,
Wastewater treatment and use in agriculture, vol. no. 47. Rome, Italy: Food and Agriculture Organization (FAO), 1992, p. xiv, 125 p.: 26 fig., 45 tab.