00487nam a22001577a 4500008004100000020001800041040005500059080001900114245004200133250001200175260004800187300001500235500004100250650002000291653001800311230622b        |||||||| |||| 00| 0 eng d  a92-4-154514-3  aNational Science LibrarycNational Science Library  a628.1(026)bN8  aGuidelines for drinking-water quality  a2nd ed.  aGeneva: bWorld Health Organisation, c1998  aviii, 36p.  aAddendum to volume 1 recommendations  aWater resources  aWater quality