by Quebedeaux, B, Havelka, U.D, Livak, K.L, Hardy, R.W.F
Published in Plant physiology (Bethesda) (01.01.1975)

by Havelka U.D, Wittenbach V.A, Boyle M.G
Published in Crop science (1984)

by Hardy, R.W.F, Havelka, U.D
Published in Crops and soils (1974)

by Hardy, R.W.F, Havelka, U.D
Published in Biological Solar Energy Conversion (1977)

by Hardy, R.W.F, Havelka, U.D
Year of Publication 1977

by Hardy, R.W.F, Havelka, U.D
Published in International Biological Programme (1976)

by Hardy, R.W.F, Havelka, U.D
Published in Science (1975)

by Hardy, R.W.F, Havelka, U.D
Published in Food: Politics, Economics, Nutrition & Research. P. H. Abelson, ed (1975)

by Havelka, U.D, Merkle, M.G
Published in S Weed Sci Soc Proc (1969)

by Havelka U.D, Boyle M.G, Hardy R.W.F
Published in Agronomy (1982)

by Ackerson, R.C, Havelka, U.D, Boyle, M.G
Published in Crop science (01.11.1984)

by Havelka, U.D, Ackerson, R.C, Boyle, M.G, Wittenbach, V.A
Published in Crop science (01.11.1984)

by Criswell J.G, Havelka U.D, Quebedeaux B, Hardy R.W.F
Published in Plant physiology (Bethesda) (1976)

by Criswell, J.G, Havelka, U.D, Quebedeaux, B, Hardy, R.W.F
Published in Crop science (1977)

by Criswell J.G, Hardy R.W.F, Havelka U.D
Year of Publication 1976

by Hardy, R.W.F, Criswell, J.G, Havelka, U.D
Published in Recent Developments in Nitrogen Fixation; an International Symposium (1977)