00484naa a2200157 a 450000100080000000500110000800800410001910000180006024500990007826000090017765000090018665300290019565300250022470000190024977300580026818319032010-01-10       1967    bl ---       0--  u    #d1 aBARLEY, F. P.  aMechanical resistance as a soil factor influencing the growth of roots and underground shoots.  c1967  aRaiz  aDeenvolvimento radicular  aResistência do solo1 aGREACEN, E. L.  tAdvances in Agronomy, New Yorkgv. 19, p. 1-43, 1967.