by Zhdanov V.M, Parfanovich M.I, Yershov F.I, Nikolskaya T.A, Kazak N.F, Nitavskaya S.D, Nagayeva L.S, Kukain R.A
Published in British Veterinary Journal (1975)

by Zhdanov, V M, Parfanovich, M I, Yershov, F I, Nikolskaya, T A, Kazak, N F, Nitavskaya, S D, Nagayeva, L S, Kukain, R A
Published in British veterinary journal (01.07.1975)