00271nam a2200097Ia 4500008004100000082002400041100003900065245002800104260003300132300000800165140113s9999    xx            000 0 und d  a631.461:581.43   L9  a"Harley, J.L. & Russel, Scott, R."  aThe Soil root interface  a1979bAcademic PresscLondon  a448