00334nam a2200121Ia 4500008004100000082002400041100001600065245002500081260004500106300001500151600001500166650003100181140224s9999    xx            000 0 und d  a581.12.7:581.824.2   aCanny, M.J.  aPhloem translocation  aLondonbCambridge University Pressc1973  aviii,301p.  aM.J. Canny  aPlant translocation,Phloem