KEIM, Juan Pablo
 yÂ
ANRIQUE, René. Nutritional Strategies to Improve Nitrogen use Efficiency by Grazing Dairy Cows. Chilean J. Agric. Res. [online].
2011,
vol.71, n.4, pp. 623-633.
ISSN 0718-5839.Â
doi: 10.4067/S0718-58392011000400019.
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