005430000a22001330004500003000900000005001700009110009000026245010100116264011000217300000800327490003500335041000800370650003100378PH-MaWHO20241108112059.0  aWorld Health Organization. International Reference Centre for Community Water Supply.  aPlastic pipe in drinking water distribution practice : introduction and bibliography up to 1970.  aThe Hague : bWorld Health Organization International Reference Centre for Community Water Supply,c1971.  a6p.  a(Its: Technical paper ; no. 1)  aeng  aWater supplyvBibliography