Ectomycorrhiza formation on lodgepole pine seedlings as affected by site peparation on a dry grassy site in the IDF zone of the Lilloet Forest District. 1996. Jones, M.D.; Durall, D.M.; Simard, S.W. Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, Victoria, BC. FRDA Memo 233, copublished by the BC Ministry of Forests.