海量图书期刊资源,随时随地畅享阅读乐趣
Impact of diseases on livestock production in the tropicsA. G. Hunter · 1985
International conference on impact of diseases on livestock production in the tropics1982
Impact of diseases on livestock production in the tropics. Developments in veterinary sciencesMunro, Ranald · 1985
Modelling the impact of livestock disease on production: case studies of non-notifiable diseases of farm animals in Great BritainBennett, R. M.; Christiansen, K.; Clifton-Hadley, R. S. · Animal Science · 1999
Impact of diseases on livestock production in the tropics: Edited by H. P. Riemann and M. J. Burridge. Developments in Animal and Veterinary Science, vol. 15. Amsterdam and New York: Elsevier. 1984. 632 pp. Dfl. 195D.W. Brocklesby · 1985
Ovariectomy as a means of abortion and control of estrus in feedlot heifersL.A. Horstman; C.J. Callahan; R.L. Morter; H.E. Amstutz · 1982