McIntosh, B.M.; Haig, D.A.; Alexander, R.A.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E.
(Published by The Government Printer, Pretoria, 1954)
From infected material obtained from various herds virus has been isolated
in several instances in developing hen's eggs, and in one instance also in mice.
The strain which could be propagated in both mice and eggs was ...