Safe water and waste disposal for rural health a program guide.

書誌詳細
共著者:	National Demonstration Water Project, U.S. Agency for International Devvelopment
フォーマット:	図書
言語:	English
出版事項:	U.S.A. United States Agency for International Development (A.I.D.) 1982.
主題:	Water supply. Public health. Waste disposal.