Rao, A RSukumar, M SParamasivam, T VKamalakshi, SParasuraman, A RRamakrishnan, M S1971-05-012009-05-271971-05-012009-05-271971-05-01Rao AR, Sukumar MS, Paramasivam TV, Kamalakshi S, Parasuraman AR, Ramakrishnan MS. Studies on viability of Variola virus. I. Viability of Variola virus in smallpox material on glass slides, in capillary tubes on filter paper and cotton threads. Indian Journal of Medical Research. 1971 May; 59(5): 699-704http://imsear.searo.who.int/handle/123456789/17041engGlassGossypiumPaperPreservation, BiologicalSpecimen HandlingVariola virus --growth & developmentStudies on viability of Variola virus. I. Viability of Variola virus in smallpox material on glass slides, in capillary tubes on filter paper and cotton threads.Journal Article