00370naa a2200109 a 450000100080000000500110000800800410001910000180006024500810007826000090015977300920016818390802010-01-10       1979    bl ---       0--  u    #d1 aBARBER, S. A.  aGrowth requirements for nutrients in relation to demand at the root surface.  c1979  tIn: HARBY, J. L.; RUSSEL, R. S. The soil-root interface. Academic Press, 1979. p. 5-20.