00402nam a2200121Ia 4500008004100000082002000041100001900061245006900080260004500149300001400194600001800208650005400226140224s9999    xx            000 0 und d  a581.144.3' 4 L4  aWilliams, R.F.  aThe shoot apex and leaf growth; a study in quantitative biology.  aLondonbCambridge University Pressc1975  avii,256p.  a R.F.Williams  aPlant physiology,Leaf growth,Quantitative biology