000 00273nam a2200109Ia 4500
100 _aW.H.O Tech.Rep series no.725
942 _cBK
245 _aWHO Expert Committee on Biological Standardization
260 _aW.H.O, Geneva
_c1985
082 _aR615.3 WHO/TRS
300 _a140
999 _c65717
_d65717