006480000a22001810004500003000900000005001700009110007200026245012700098020001800225264004900243490004000292300001000332041000800342650003500350650002700385650002400412700003000436PH-MaWHO20241108112341.0 aWHO Expert Committee on Biological Standardization (1978 : Geneva). aWHO Expert Committee on Biological Standardization [meeting held in Geneva from 7 to 13 November 1978] : thirtieth report. a92-4-120638-1 aGeneva : bWorld Health Organization,c1979. a(WHO technical report series ; 638) a199p. aeng aBiological productsxStandards aAntibioticsxStandards aVaccinesxStandards aWorld Health Organization