by Jersak J.M, McColl J.G
Published in Soil Science Society of America journal (01.03.1989)

by McColl, J.G, Pohlman, A.A, Jersak, J.M, Tam, S.C, Northup, R.R
Published in Sustained productivity of forest soils / edited by S.P. Gessel ... [et. al.] (1990)