00297nam a2200097Ia 4500008004100000082002400041100002500065245007000090260003100160300000800191140113s9999    xx            000 0 und d  a581.43:581.143   L7  a"Scott, Russell. R."  aPlant Root Systems : Their function and interaction with the soil  a1977bMcGraw-HillcEngland  a298