004370000a22001330004500020001800000060000800018082001600026100002100042245007000063260004300133260000900176300000800185650011000193  a0 7 08 4137 3  a100  a581.498 RUS  aRussell, Scott R  aPlant root systems : their function and interaction with the soil  aEngland, English Language Book Society  c1977  a298  aPlant root system/ rhizosphere flora/ soil environment/ anacrobic soil condition/ soil interface/ tillage