Tuberculosis eradication under the accredited-herd plan. Supplement 1 to herd list No. 3, List of herds of Ayshire, Guernsey, Holstein-Friesian, and Jersey cattle which have passed one official tuberculin test with a viev to being accredited /
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| Typ dokumentu: | Kniha |
| Jazyk: |
angličtina |
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Washington :
United States Department of Agriculture,
1920.
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| Edice: |
United States Department of Agriculture. Department circular ;
143 |
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