007030000a22001810004500003000900000005001700009110010800026245015700134020001800291264004900309490004000358300000900398041000800407650001300415650003000428650003300458700003000491PH-MaWHO20241108112335.0 aWHO Scientific Group on Multipurpose Serological Surveys and WHO Serum Reference Banks (1969 : Geneva). aMultipurpose serological surveys and WHO serum reference banks : report of a WHO scientific group [meeting held in Geneva from 18 to 24 November 1969] . a92-4-120454-0 aGeneva : bWorld Health Organization,c1970. a(WHO technical report series ; 454) a95p. aeng aSerology aBlood specimen collection aCommunicable disease control aWorld Health Organization