International Drinking Water Supply and Sanitation Decade (draft resolution proposed by Dr K. J. Bart, Dr A. J. R. Cabral and Dr H. Ntaba)
الإستشهاد
Executive Board, 83. (1989). International Drinking Water Supply and Sanitation Decade (draft resolution proposed by Dr K. J. Bart, Dr A. J. R. Cabral and Dr H. Ntaba). World Health Organization. https://iris.who.int/handle/10665/163218