Document Type : Full Research Paper
Author
Ministry of Jahad Sazandegi
Niroumand, M. (1989). Non-protein nitrogen (NPN) in lactating cows rations. Veterinary Research & Biological Products, 2(1), 12-16.
M. Niroumand. "Non-protein nitrogen (NPN) in lactating cows rations". Veterinary Research & Biological Products, 2, 1, 1989, 12-16.
Niroumand, M. (1989). 'Non-protein nitrogen (NPN) in lactating cows rations', Veterinary Research & Biological Products, 2(1), pp. 12-16.
Niroumand, M. Non-protein nitrogen (NPN) in lactating cows rations. Veterinary Research & Biological Products, 1989; 2(1): 12-16.
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