J. Spalatin, R. P. Hanson, T. D. Jones, Edema of the Eyelid and Face of Chickens Exposed to the Viscerotropic Type of Newcastle Disease Virus, Avian Diseases, Vol. 17, No. 3 (Jul. - Sep., 1973), pp. 623-628
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Spalatin et al. (1973) studied this question.
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