by Reicks, D.L., Levis, D.G.
Published in Theriogenology (01.11.2008)

by Levis, D.G, Reicks, D.L
Published in Theriogenology (2005)

by Britt, J.H., Szarek, V.E., Levis, D.G.
Published in Theriogenology (01.07.1983)

by McGlone, J.J, Borell, E.H. von, Deen, J, Johnson, A.K, Levis, D.G, Meunier-Salaun, M, Morrow, J, Reeves, D, Salak-Johnson, J.L, Sundberg, P.L
Published in The Professional animal scientist (2004)

by Levis, D.G
Published in Atti della Società Italiana di Patologia ed Allevamento dei Suini (Italy) (2006)

by Mcglone, J.J., von Borell, E.H., Deen, J., Johnson, A.K., Levis, D.G., Meunier-Salaon, M., Morrow, J., Reeves, D., Salak-Johnson, J.L., Sundberg, P.L.
Published in The Professional animal scientist (01.04.2004)

by Levis, D G, Ford, J J, Christenson, R K
Published in Journal of animal science (01.02.1997)

by Levis, D.G, Ford, J.J, Christenson, R.K
Published in Journal of animal science (1988)

by Levis D.G
Published in Feed industry (1981)

by Levis, D G, Barnett, J L, Hemsworth, P H, Jongman, E
Published in Journal of animal science (01.12.1995)

by Levis, D.G. (University of Nebraska, Lincoln.)
Published in Feedstuffs (28.07.1999)

by Levis, D.G
Published in Anaporc (Espana) (01.10.1999)

by Levis, D.G, Ford, J
Published in ARS - United States Department of Agriculture, Agricultural Research Service (USA) (01.11.1986)

by Bodman, G.R, Levis, D.G
Published in American Society of Agricultural Engineers. Microfiche collection (USA) (1986)

by Levis, D.G
Published in Selezione Veterinaria (Italy) (01.06.1991)

by Levis, D.G. (University of Nebraska, Lincoln, NE)
Published in The Veterinary clinics of North America. Food animal practice (01.11.1992)

by Levis, D.G, Christenson, R.K
Published in EC - Cooperative Extension Service, University of Nebraska (1984)

by Levis D.G
Published in Selezione Veterinaria (1991)

by Woodard, J.R, Levis, D.G
Published in A.G. - North Carolina State University, Agricultural Extension Service (USA) (01.04.1980)

by Levis, D.G. (University of Nebraska, Lincoln, NE)
Published in Veterinary medicine (1985) (01.09.1990)