000 00300nam a2200121Ia 4500
100 _aWHO
020 _a92-4-120904-6
942 _cBK
245 _aWHO expert committee on biological standardization : fiftieth report
260 _aauth., Geneva
_c2002
082 _aR615.3 Who/TRS
300 _avi,107p
999 _c30142
_d30142