TY - GEN AU - Feachem, R.G., ...[et al] TI - Health aspects of excreta and sullage management : a state of-the-art review PY - 1981/// CY - Washington PB - World Bank KW - Excreta-Disposal KW - SANITARY ENGINEERING KW - SEWAGE KW - SEWAGE TREATMENT KW - WATER SUPPLY ER -