000 00290nam a2200097Ia 4500
008 220729s2015 xx 000 0 und d
041 _aeng
100 _aWHO
245 _aW.t.r.s 993 who expert committee on biological standardization
260 _aSwitzerland
_bWorld Health Organisation
_c2015
999 _c136152
_d136152