1. Whitehead, R.H., et al. 1968. Trans. R. Soc. Trop. Med. Hyg. 62:439-445. 2. Doherty, R.L., et al. 1968. Trans. R. Soc. Trop. Med. Hyg. 62:430-438. 3. Director, Qld Inst. Med. Res. Personal communication. 1967. 4. Calisher, C.H., et al. Personal communication. 5. Gorman, B.M., et al. 1975. Aust. J. Med. Technol. 6:65-71.
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