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Browsing 1966 Onderstepoort Journal of Veterinary Research, Volume 33, 1966 by Author "Clark, R."
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Horak, Ivan Gerard; Clark, R.; Jansen, B.C.
(Pretoria : The Government Printer, 1966)
Trials are described in which the reactions of nine sheep infested with O. columbianum
and three uninfested controls were studied in detail.
The main pathological findings were:-
(i) anorexia, loss in body weight, ...