[Biological research and security institutes]

G Darsie1, A J Falczuk, I E Bergmann

  • 1Centro Panamericano de Fiebre Aftosa, Organización Panamericana de la Salud/Organización Mundial de la Salud, P.O. Box 589, CEP: 20010-974, Rio de Janeiro, RJ, Brasil.

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