00330nam a2200097Ia 4500008004100000082002000041100004600061245005300107260006500160300000700225140113s9999    xx            000 0 und d  a581.43.084   L1  a"Schuurman, J.J. and Goedewaagen, M.A.J."  aMethods of examination of root systems and roots  a1971bCentre for Agric.Publishing & DocumentationcWagenigen  a86