Enlace original:
https://apps.who.int/iris/handle/10665/40263
WHO Expert Committee on Biological Standardization
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World Health Organization
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[Expert Committee on Biological Standardization : eighth report [of a meeting held in Geneva from 18 to 23 October 1954], Comité OMS d' experts de la standardisation biologique : [réuni à Genève du 24 au 30 avril 1973] : vingt-cinquième rapport]