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Resource: Slovak Agricultural Library (SAL) - SAL Online Catalogue
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Author Sysno/Doc.kind = "^spu_us_auth 0140226 xkni^"
- Predicting economic optimum and nitrogen balance in the ley - ruminant system / B.W.R. Torssell, B. Fagerberg . Uppsala : Swedish university of agricultural sciences , 1990 . 48 s . [1, of that borrowed 0]