TY - Generic T1 - Some effects of N on ectomycorrhizal diversity of Scots pine (Pinus sylvestris L.) in northeastern Germany. Y1 - 1999 A1 - Wöllecke, J. A1 - Munzenberger, B. A1 - Huttl, R.F. JF - Water, Air and Soil Pollution VL - 116 ER -