African swine fever virus
by W. R. Hess. Bluetongue virus, by P. G. Howell and D. W. Verwoerd
Bok Engelsk 1971 William Robert Hess
| Utgitt | Wien , 1971
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|---|---|
| Omfang | 74 p. : illus.
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| Opplysninger | Includes bibliographies.
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| Emner | |
| ISBN | 1071623338. - 9781071623336
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