00267nam a2200097Ia 4500008004100000082001600041100003300057245002800090260004300118300000800161140113s9999    xx            000 0 und d  a581.13   L7  a"Hewitt, E.J. & Smith, T.A."  aPlant Mineral Nutrition  a1974bEnglish University PresscLondon  a298