000 00304nam a2200121Ia 4500
008 160921s9999 xx 000 0 und d
020 _a92-4-121006-0
100 _aWHO
245 _aPrevention of Sexual Transmission of Human Immunodeficiency Virus
260 _bWHO
_c1990
300 _a27
942 _cBK
999 _c26548
_d26548