000 00288nam a2200109Ia 4500
100 _aW.H.O Tech.Rep series no.741
942 _cBK
245 _aWHO Expect committee on Biological Standardization 37 th report
260 _aW.H.O, Geneva
_c1987
082 _aR615.3 W.H.O/TRS
300 _a203
999 _c61756
_d61756