00306nam a2200109Ia 4500008004100000082002200041100002200063245005000085260003100135300001000166650002000176140113s9999    xx            000 0 und d  a581.133.8(042) H8  a"Hoagland, D. R."  aLectures on the inorganic nutrition of plants  b"USA : Waltham mass, 1948"  a225p.  aPlant nutrition