00301nam a2200109Ia 4500008004100000082001500041100002700056245003300083260004500116300001000161650002000171140113s9999    xx            000 0 und d  a581.1'4 L3  a" Greulach, Victor A."  aPlant function and structure  b"New York : The Macmillan company, 1973"  a575p.  aPlant structure