000 00254nam a2200097Ia 4500
022 _a0042-9686
245 _aBULLETIN OF THE WORLD HEALTH ORGANIZATION
260 _bWorld Health Organization
_aCH-1211 Geneva 27CH
583 _c5/24/00
_kSANDRA_W
942 _cS
999 _c22810
_d22810