Sehgal, C LMurty, D KSingha, PRaghavan, N G1971-05-012009-05-271971-05-012009-05-271971-05-01Sehgal CL, Murty DK, Singha P, Raghavan NG. Studies on laboratory testing of smallpox vaccines used in India under the National Smallpox Eradication Programme. Indian Journal of Medical Research. 1971 May; 59(5): 726-9http://imsear.searo.who.int/handle/123456789/21167engCommunicable Disease ControlHumansIndiaPublic HealthSmallpox Vaccine --analysisWater --analysisStudies on laboratory testing of smallpox vaccines used in India under the National Smallpox Eradication Programme.Journal Article