Bedford, G.A.H.; Nieschulz, Otto; D Toit, Rene M.; Union of South Africa. Dept. of Agriculture; Du Toit, P.J.(Union of South Africa : Dept. of Agriculture, 1934)
During the summer 1931/32 transmission experiments with
bluetongue in sheep were carried out at Onderstepoort. Owing to
lack of rain, the season was very unfavourable for our work.
The result of a mosquito survey had ...