by Kozin R.B
Published in Vestnik sel'skokhozyajstvennoj nauki (1986)

by Kozin, R.B
Published in Vestnik sel'skokhozyajstvennoj nauki (USSR) (1986)

by Kozin, R.B
Published in Vestn S kh Nauki Mosc (1974)

by Kozin,R.B
Published in XXI Int.Beekeep.Congr (1967)

by Kozin,R.B
Published in Pchelovodstvo Mosk (1954)

by Kozin, R.B, Reznitskii, E.M
Published in Soviet agricultural sciences (USA) (1986)

by Kozin, R.B
Published in Pchelovodstvo (1985)

by Kozin, R.B
Published in Teknologiia proizvodstva produktov pchelovodstva; A. N. Mel'nichenko, ed (1975)

by Kozin, R.B
Published in Opylenie Pchelami Entomofil'nykh Sel'skokhoziaistvennykhkul'tur (1972)

by Reznitskij E.M, Kozin R.B
Published in Byulleten' Vsesoyuznogo nauchno issledovatel'skogo instituta razvedeniya i genetiki sel'skokhozyajstvennykh zhivotnykh (1984)

by Kozin, R.B, Iudajev, Lu.N
Published in Vestnik sel'skokhoziaistvennoi nauki (1984)

by Mel'nichenko, A.N, Kozin, R.B
Published in Vestnik sel'skokhoziaistvennoi nauki (1982)

by Kozin R.B, Reznitskij E.I
Published in Doklady Vsesoyuznoj Akademii Sel'skokhozyajstvennykh Nauk (1980)

by Kozin R.B, Reznitskij E.I
Published in Pchelovodstvo (1980)

by Kozin, R.B, Dmitriev, V.I
Published in Pchelovodstvo (1978)

by Kozin, R.B, Vladimirova, P.A
Published in Vestn S kh Nauki Mosc (1974)

by Smaragdova, N.P, Kozin, R.B, Antonov, V.I
Published in Selektsiia i semenovodstvo (1981)