005830000a22001570004500003000900000005001700009100001900026710013500045245009300180562001900273264004900292300000900341041000800350650004300358650002400401PH-MaWHO20241108112426.0  aHjortsberg, V.  aWorld Health Organization. Division of Drug Management and Policies. ; WHO Collaborating Centre for Chemical Reference Substances.  aWHO Collaborating Centre for Chemical Reference Substances : report on the work in 2003.  aEDM/QSM/2004.7  aGeneva : bWorld Health Organization,c2004.  a88p.  aeng  aPharmaceutical preparationsxStandards  aReference standards