Haig, D.A.; Alexander, R.A.; Clark, R.; Sterne, M.; Louw, J.G.; Van der Reyden, D.; De Kock, V.E.
(Published by The Government Printer, Pretoria, South Africa., 1951)
1. Fowl-pox as it occurs in the Union of South Africa is reviewed briefly
together with relevant literature on the methods of immunization.
2. In South Africa until recently vaccine prepared from virus propagated on
pigeons ...