000 00269nam a2200109Ia 4500
100 _aCleand, Iohn G. & others
942 _cBK
245 _aWHO expert committee on biological Standardization
260 _aWHO, Geneva
_c1990
082 _aR368.738/WHO Cle
300 _a221
999 _c64672
_d64672