by Steffens, G.L., Zimmerman, R.H.
Published in Scientia horticulturae (01.11.1992)

by Steffens, G.L., Jacobs, F.W., Engelhaupt, M.E.
Published in Scientia horticulturae (01.10.1993)

by Steffens, G.L, Zimmerman, R.H
Published in Acta horticulturae (01.01.1990)

by Steffens, G.L., Jacobs, F.W., Engelhaupt, M.E.
Published in Scientia horticulturae (1991)

by Wang S.Y, Steffens G.L, Faust M
Published in Journal of the American Society for Horticultural Science (01.01.1983)

by Steffens, G.L, Zimmerman, R.H
Published in HortScience (01.04.1989)

by Steffens, G.L, Stutte, G.W
Published in Journal of plant growth regulation (1989)

by Cheng, A.L.S, Steffens, G.L
Published in Animal reproduction science (1983)

by Grove, M.D, Spencer, G.F, Rohwedder, W.K, Mandava, N, Worley, J.F, Warthen, J.D. Jr, Steffens, G.L, Flippen-Anderson, J.L, Cook, J.C. Jr
Published in Nature (London) (01.01.1979)

by Steffens G.L, Hedden P
Published in Physiologia plantarum (01.12.1992)

by Steffens, G.L
Published in Plant growth substances, 1979 : proceedings of the 10th International Conference on Plant Growth Substances, Madison, Wisconsin, July 22-26, 1979 / edited by F. Skoog (1980)

by Steffens G.L
Published in Recent advances in tobacco science (1979)

by Steffens G.L
Published in Proceedings of the Plant Growth Regulator Working Group; annual meeting. Plant Growth Regulator Working Group (1978)

by Steffens G.L
Published in Proceedings of the Annual Meeting Northeast Weed Science Society (1977)

by Steffens, G.L
Published in Proc Northeast Weed Control Control Conf (1975)

by Wang, S.Y, Steffens, G.L. (USDA, Beltsville, MD (USA). Fruit Lab.), Byun, J.K
Published in Physiologia plantarum (01.02.1985)

by Lin, J.T, Steffens, G.L, Murofushi, N
Published in Journal of chromatography (10.05.1991)

by Wang, S.Y, Steffens, G.L
Published in Phytochemistry (Oxford) (1985)

by Steffens, G.L
Published in Journal of plant growth regulation (01.03.1988)

by Steffens, G.L. (ARS, USDA, Beltsville, MD)
Published in ACS symposium series (1991)