000 00300nam a2200121Ia 4500
008 210804s1988||||xx |||||||||||||| ||und||
020 _a9241561157
041 _aeng
245 0 _aAids
_bprevention and control
260 _aGeneva
_bWorl health organisation (who)
_c1988
300 _a169
942 _cBK
999 _c12587
_d12587