Alexander, R.A.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture; Du Toit, P.J.
(Union of South Africa : Dept. of Agriculture, 1934)
Details of the results obtained from the injection of horses and mules with neurotropic mouse and guinea pig adapted virus are given. It is shown that the virulence of horsesickness virus progressively decreases for equines ...