by Perry, Michael E. L, Schacht, Walter H, Ruark, Gregory A, Brandle, James R
Published in Agroforestry systems (01.09.2009)

by Geron, C.D, Ruark, G.A
Published in Canadian journal of forest research (01.10.1988)

by Ruark, G.A. (USDA Forest Service, Forest Environment Research Staff, Washington, DC)
Published in Forest science (01.02.1993)

by Morzuch, B.J. (University of Massachusetts, Amherst, MA), Ruark, G.A
Published in Forest science (01.03.1991)

by Ruark, G.A
Published in Soil Science Society of America journal (01.01.1985)

by Craig, J.R. (USDA Forest Service, Southeastern Forest Experiment Station, Research Triangle Park, NC), Ruark, G.A
Published in Communications in soil science and plant analysis (01.01.1991)