00294nam a2200109Ia 4500008004100000082001300041100002800054245002900082260004200111300001000153650002100163140113s9999    xx            000 0 und d  a581.1 G7  a" Wright, E. C. Barton"  aGeneral plant physiology  b"London : Williams and norgate, 1937"  a539p.  aPlant physiology