Du Toit, P.J.; Alexander, R.A.; Neitz, W.O.; Union of South Africa. Dept. of Agriculture; Du Toit, P.J.
(Union of South Africa : Dept. of Agriculture, 1933)
In a previous communication [this Bull. 3. 538.] it was shown that mules could be protected against horsesickness by a suitable formalinized vaccine. Further work has confirmed these results and indicated that a spleen ...