TY - GEN AU - World Health Organization ED - WHO Scientific Group on Multipurpose Serological Surveys and WHO Serum Reference Banks (1969 : Geneva). TI - Multipurpose serological surveys and WHO serum reference banks : report of a WHO scientific group [meeting held in Geneva from 18 to 24 November 1969] T2 - (WHO technical report series ; 454) SN - 92-4-120454-0 PY - 1970/// CY - Geneva : PB - World Health Organization KW - Serology KW - Blood specimen collection KW - Communicable disease control ER -