Principles and practice of feeding dairy cows /
ed. by W. B. Broster, R. H. Phipps and L. L. Johnson
- Hurley : British Grassland Society, 1986
- 322 p.
- .
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Ganado lechero--Alimentación I. Phipps, R. H., ed. II. Johnson, L. L., ed. III. British Grassland Society