Mukerjee, A B1975-04-162009-05-311975-04-162009-05-311975-04-16Mukerjee AB. Editorial: Operation smallpox. Journal of the Indian Medical Association. 1975 Apr; 64(8): 212http://imsear.searo.who.int/handle/123456789/102570engDisease Outbreaks --prevention & controlHumansIndiaSmallpox --prevention & controlWorld Health OrganizationJournal Article