000 00354nam a22001337a 4500
999 _c192711
_d192711
003 OSt
082 _aWHO
245 _aWHO expert committee on biological standardization:forty sixth report
260 _aGeneva
_bWorld health organization
_c1998
300 _a90p.
440 _aWHO technical report series
_v872
546 _aEnglish
942 _2ddc
_cREP