Willingness to pay for improved piped water

Antzeko izenburuak

• Handbook of corrosion resistant piping
  nork: Scheitzer, Philip A
  Argitaratua: (1969)
• Piping Handbook
  nork: Peno C King
  Argitaratua: (1967)
• Industrial piping
  nork: Littleton, Charles T
  Argitaratua: (1962)
• Piping design for process plants
  nork: Rose, Howard F
  Argitaratua: (1963)
• Pipe welding procedures
  nork: Rampaul, Hoobasar
  Argitaratua: (1973)