00277nam a2200097Ia 4500008004100000082002600041100003200067245004100099260003100140300000800171140113s9999    xx            000 0 und d  a581.331.2(082.2)   L1  a"Heslop, Harrison. J., ed."  aPollen : Development and physiology   a1973bButterworthscLondon  a338