000 00326nam a22001457a 4500
020 _a9241208589
050 _aRS189
_b.W67
100 _aWHO
245 _aWHO Expert committee on biological standardization
250 _a4th ed
260 _aGeneva
_bWHO
_c1995
300 _aVI,102pg.
650 _aBiological
942 _cBK
999 _c14347
_d14347