00335nam a2200121Ia 4500008004100000082001500041100003100056245002900087260005000116300001000166600001700176650002000193130903s9999    xx            000 0 und d  a581.13  L4  a E.J.Hewitt and T.A.Smith.  aPlant mineral nutrition.  aLondonbEnglish Universities Press Ltd.c1974  a298p.  aHewitt, E.J.  aPlant nutrition