Code of basic requirements for water supply, drainage and sanitation. /

Antzeko izenburuak

• Code of basic requirements for water supply ,drainage and sanitation , 1172-1983 /
  Argitaratua: (1989)
• Sanitation, drainage and water supply /
  nork: Mitchell, Eric.G .
  Argitaratua: (1961)
• Water supply and Drainage /
  nork: Freeman, William
  Argitaratua: (1945)
• Sanitation, drainage and watersupply /
  nork: Mithchell, G. Eric
  Argitaratua: (1960)
• Rural water supply and sanitation /
  nork: Wright, Forrest B.
  Argitaratua: (1969)