00390naa a2200133 a 450000100080000000500110000800800410001910000190006024500540007926000090013370000160014270000180015877300800017618268432010-01-10       1976    bl ---       0--  u    #d1 aGREACEN, E. L.  aResistance to water flow in the roots of cereals.  c19761 aPONSANA, P.1 aBARLEY, K. P.  tEcological Studies. Analysis and Synthesis, Berlingv. 19, p. 86-100, 1976.