00298nam a2200109Ia 4500008004100000082001500041100001900056245003200075260005100107300001000158650002000168140113s9999    xx            000 0 und d  a631.811 J1  a" Truog, Emil"  aMiniral nutrition of plants  b"New Delhi : Oxford & IBH publishing Co, 1951"  a469p.  aPlant nutrition