00318nam a2200109Ia 4500008004100000082001800041100002200059245005800081260003800139300001000177650002100187140113s9999    xx            000 0 und d  a581.1(023) J0  a" Stiles, Walter"  aAn introduction to the principles of plant physiology  b"London : Methuen & Co Ltd, 1950"  a701p.  aPlant physiology