00276nam a2200109Ia 4500003000400000008004100004040000800045100001900053245004900072260003600121300000900157LDD181029s9999    xx            000 0 und d  cLDD  aMengel, Konrad 0aPrinciples of plant nutritioncKonrad Mengel  aSwitzerlandbInterntionalc1987  a689p