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020 _a9241206258
082 _a615.372
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100 _aWorld Health Organization
245 _aWHO expert committee on biological standardization
260 _aGeneva
_bWHO
_c1978
300 _a147 p.-
440 _aWHO technical report Series 626
650 _aBiological standardization
650 0 _aWHO technical report Series 626
_9119644
942 _cPR