International standard for purified protein derivative (PPD) of mammalian tuberculin

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Citation
World Health Organization. Biologicals Unit & WHO Expert Committee on Biological Standardization (1983 : Geneva, Switzerland). (1983). International standard for purified protein derivative (PPD) of mammalian tuberculin. World Health Organization. https://apps.who.int/iris/handle/10665/60229
Description
PC.HQWHO/BS/83.1408. Unpublished
1 p.