by Stephens C.T, Kennedy M.K
Published in North Central regional extension publication - Cooperative Extension Service (1980)

by Kessler, G.M, Taylor, J.L, Warncke, D.D
Published in North Central regional extension publication, Cooperative Extension Service (01.11.1991)

by Stephens, C.T, Jawitz, S
Published in North Central regional extension publication, Cooperative Extension Service (01.12.1989)

by Kessler, G.M, Taylor, J.L, Warncke, D.D
Published in North Central regional extension publication, Cooperative Extension Service (01.08.1989)

by Gilkerson, D
Published in North Central regional extension publication, Cooperative Extension Service (1993)

by Gilkerson, D
Published in North Central regional extension publication, Cooperative Extension Service (1993)

by Johnson, R.J. (University of Nebraska-Lincoln), Glahn, J.F
Published in North Central regional extension publication, Cooperative Extension Service (USA) (01.12.1992)

by Roe, R.G, Agnew, N.H, Naeve, L, Christians, N.E
Published in North Central regional extension publication, Cooperative Extension Service (USA) (01.11.1992)

by Wellman, A. (University of Nebraska-Lincoln)
Published in North Central regional extension publication, Cooperative Extension Service (USA) (01.06.1992)

by Patrick, G.F. (Purdue University)
Published in North Central regional extension publication, Cooperative Extension Service (USA) (01.05.1992)

by Shane, R. (South Dakota State University)
Published in North Central regional extension publication, Cooperative Extension Service (USA) (01.02.1992)

by Taylor, J.L. (Michigan State University), Hanchek, A.M, Ewart, L, Carlson, W
Published in North Central regional extension publication, Cooperative Extension Service (USA) (1992)

by Volker, C.B
Published in North Central regional extension publication, Cooperative Extension Service (1992)

by Gahring, S, Niemeyer, S, Reilly, R, Stout, J
Published in North Central regional extension publication, Cooperative Extension Service (1992)

by Kerckhoff, R.K
Published in North Central regional extension publication, Cooperative Extension Service (1992)

by Hassel, C.A
Published in North Central regional extension publication, Cooperative Extension Service (1992)

by Knapp, A.D, Gutormson, T.J, Misra, M.K
Published in North Central regional extension publication, Cooperative Extension Service (USA) (01.07.1991)

by Gunsolns, J.L. (University of Minnesota), Curran, W.S
Published in North Central regional extension publication, Cooperative Extension Service (USA) (01.07.1991)

by Hart, N.E. (Iowa State University, Ames, IA)
Published in North Central regional extension publication, Cooperative Extension Service (USA) (01.04.1991)

by Crowley, J, Jorgensen, N, Howard, T, Hoffman, P, Shaver, R
Published in North Central regional extension publication, Cooperative Extension Service (USA) (01.03.1991)