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Echevarria et al., 1985. Nutr. Rep. Int., 32 (2): 463-468
Document reference
Echevarria, M. ; Garcia, M. ; Meini, G. ; Stosic, D. ; McDowell, L., 1985. Effect of copper, cobalt and zinc supplementation on liveweight gain of Nellore heifers in the Peruvian tropics. Nutr. Rep. Int., 32 (2): 463-468
