00485     2200169   4500001002100000008003900021035002000060245007300080100003000153260002400183300002300207020002200230084001800252082001200270650001900282990001400301INLIS000000000001768                                   N    a0010-0317001766  aCalcium and magnesium in drinking-water : Public health significance  aWorld Health Organization  aGeneva :bWHOc2009  axi, 180 hlmc22 cm  a978-92-4-156355 0  a613.287 Wor c  a613.287  aDRINKING WATER  a017309111