000 00362nam a2200121Ia 4500
100 _aWorld Health Organization
020 _a92-4-154580-1
942 _cBK
245 _aGuidelines for safe recreational water enivronments vol.1
_bcoastal and fresh waters
260 _aWorld Health Organization, (s.l.)
_c2003
082 _aR363.7394 W.H.O.
300 _axxxiii,219
999 _c25867
_d25867