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Sanitation planning : a challenge for the 90s (英语)

摘要

In response to the 1980s being singled out as the international drinking water supply and sanitation decade, a major effort was made to provide improved water supply and excreta disposal facilities for all. Despite the good intentions demonstrated by ... 更多显示

详细

  • Brown, Ato;
  • 1992/02/06
  • 工作报告
  • 72005
  • 1
  • 1
  • 非洲
  • 非洲
  • 2012/08/27
  • Disclosed
  • Sanitation planning : a challenge for the 90s
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