by Moennig, V., Eicken, K., Flebbe, U., Frey, H.-R., Grummer, B., Haas, L., Greiser-Wilke, I., Liess, B.
Published in Preventive veterinary medicine (15.11.2005)

by Bohrmann R, Frey H.R, Liess B
Published in Deutsche Tieraerztliche Wochenschrift (1988)

by Frey, H.R
Published in Selezione Veterinaria (Italy) (01.05.1992)

by Frey H.R
Published in Selezione Veterinaria (1992)

by Frey, H.R.
Published in OCEANS 91 Proceedings (1991)

by Hafez, S.M, Frey, H.R
Published in Bulletin of epizootic diseases of Africa (1973)

by Frey, H.R, Depner, K.R, Gelfert, C.C, Liess, B
Published in Archives of virology. Supplementum (1991)

by H.R. FREY
Year of Publication 01.09.1972

by H.R. FREY
Year of Publication 17.07.1972

by Frey, H.R
Published in Deut Tierarztl Wochensch (1972)

by Dahle, J, Liess, B, Frey, H.R
Published in Pestivirus infections of ruminants / edited by J.W. Harkness (1987)

by Bethem, T.D., Frey, H.R.
Published in OCEANS 91 Proceedings (1991)

by Liess B, Frey H.R, Prager D
Year of Publication 1977

by Hafez, S.M, Liess, B, Frey, H.R
Published in Zentralblatt für Veterinärmedizin. Reihe B (1976)

by Liess B, Willhaus Th, Frey H.R, Zaghawa A
Published in Journal of veterinary medicine. Series B (1989)

by Frey, H.R, Depner, K.R, Gelfert, C.C, Liess, B
Published in Deutsche Tieraerztliche Wochenschrift (Germany, F.R.) (1991)

by Orban, S, Liess, B, Hafez, S.M, Frey, H.R, Blindow, H
Published in Zentralblatt fur Veterinarmedizin. Reihe B (1983)

by Hyera, J.M.K, Dahle, J, Liess, B, Moennig, V, Frey, H.R
Published in Pestivirus infections of ruminants / edited by J.W. Harkness (1987)

by Liess, B, Orban, S, Frey, H.R, Trautwein, G
Published in Pestivirus infections of ruminants / edited by J.W. Harkness (1987)

by Frey, H.R, Liess, B, Peters, W, Roming, L, Lehmann, B
Published in Pestivirus infections of ruminants / edited by J.W. Harkness (1987)