00310nam a2200097Ia 4500008004100000082004200041100003900083245004200122260004000164300000800204140113s9999    xx            000 0 und d  a"581.132""1975.6.9/.11""(082.2)   L6"  a"Burris, R.H. & Black, C.C., eds."  aCO2 metabolism and plant productivity  a1975bUniversity Park PresscLondon  a431