00288nam a2200109Ia 450000500170000000800410001708200150005810000160007324500340008926000470012330000080017020260224041000.0260224s9999||||xx |||||||||||||| ||und||  a581.53 MEN  aMengel, K.  0aPrinciples of plant nutrition  aBoston : Kluwer Academic Publishers,c2006  a849