by Edwards, Pamela J., Helvey, J. David
Published in Journal of environmental quality (1991)

by Kochenderfer, J.N, Helvey, J.D
Published in Journal of soil and water conservation (01.01.1987)

by De Walle, D. R., Ribblett, G. C., Helvey, J. D., Kochenderfer, J.
Published in Journal of environmental quality (01.04.1985)

by Helvey, J.D, Tiedemann, A.R, Anderson, T.D
Published in Journal of soil and water conservation (01.01.1985)

by Tiedemann, A. R., Helvey, J. D., Anderson, T. D.
Published in Journal of environmental quality (01.01.1978)

by Fowler, W. B., Helvey, J. D.
Published in Science (American Association for the Advancement of Science) (12.04.1974)

by Fowler W. B, Helvey J. D, Johnson Curtis
Published in United States. Pacific Northwest Forest and Range Experiment Station. U.S.D.A. general technical report PNW (USA). no. 91 (1979)

by Stidd, Charles K., Fowler, W. B., Helvey, J. D.
Published in Science (American Association for the Advancement of Science) (18.04.1975)

by Tiedemann, A. R., Helvey, J. D., Anderson, T. D.
Published in Journal of environmental quality (01.01.1980)

by Patric J.H, Evans J.O, Helvey J.D
Published in Journal of forestry (01.02.1984)

by Helvey J.D, Kunkle S.H, DeWalle D.R
Published in Journal of soil and water conservation (01.01.1982)

by Nik, A.R.H, Lee, R, Helvey, J.D
Published in Water resources bulletin (Urbana) (01.01.1983)

by Woodsmith, R.D, Vache, K.B, McDonnell, J.J, Helvey, J.D
Published in Water resources research (01.11.2004)

by Helvey, J. D
Year of Publication 1975

by Fowler, W. B., Helvey, J. D.
Published in Science (American Association for the Advancement of Science) (18.04.1975)

by Helvey, J. D
Year of Publication 1964

by Helvey J.D, Fowler W.B
Published in Northwest science (1982)

by Helvey, J. D, Tiedemann, Arthur R
Year of Publication 1978

by Fowler, W. B. (William Burgess), Helvey, J. D
Year of Publication 1978

by Helvey, J. D, Fowler, W. B, Klock, G. O, Tiedemann, A. R
Year of Publication 1976