Asian Institute of Technology2007-11-121982-04-012007-11-121982http://hdl.handle.net/10625/4810Text1 digital file (6 p.)enSANITATIONINFORMATION SERVICESEnvironmental Sanitation Information Center (ENSIC) : second final report ... 14 July 1978 - 13 July 1982IDRC Final Report