00411nam a2200097Ia 4500008004100000082002000041100003800061245018000099260002600279300000800305140113s9999    xx            000 0 und d  a631.81 :634      a"Rayner, M.C. & Nelson,-Jones.W."  aProblems in Tree nutrition: an account of researches concerned parimarily with the mycorrhizal habit in relation to forestry and with some biological aspects of soil fertility  bFaber & FabercLondon  a184