[The nitrogen metabolism in the large intestine of ruminants. 8. Metabolism of intracecally infused 15N-urea with a supplement of pectin in heifers].
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J. Bartelt | A. Sommer | K. Götz | C. Kijora | Z. Čerešňáková | H. Bergner | J. Szakacz | L. Charastinova