Medycyna Weterynaryjna > 1995 > 51 > 8 > 454-456
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journal ISSN : | 0025-8628 |
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Bibliography
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1. Almlid T., Johnson L. A.: Zuchthyg. 24, 8, 1989.
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2. Berger B. i wsp.: Reprod. Domést. Anim. 27, 266, 1992.
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3. Bwanga C. O.: Acta Vet. Scand. 32, 431, 1991.