00400nam a22001217a 4500020002200000022001400022100002500036245005500061250001600116260003500132300001300167306009800180  a978 92 4 120977 9  a0512-3054  dWHO Expert Committee  aWHO Expert Committee on Biological Standardization  a60th report  aGeneva, SwitzerlandbWHOc2013  a1-227pgs  aWHO Technical Report Series, Biological products - standards, Vaccine - standards, Guidelines