00452naa a2200157 a 450000100080000000500110000800800410001910000200006024500810008026000090016165000160017065300150018665300160020165300160021777300610023320116552015-03-17       1951    bl ---       0--  u    #d1 aRICHARDS, F. J.  aPhyllotaxisbits quantitative expression and relation to growth in the apex.  c1951  aCrescimento  aExpressão  aPhyllotaxis  aQualitativa  tPhill Trans. R. Soc.gv. 235, n. 3.629, p. 509-64, 1951.