00466naa a2200121 a 450000100080000000500110000800800410001910000160006024501500007626000090022670000170023577300920025218358822010-01-10       1975    bl ---       0--  u    #d1 aDREW, M. C.  aFurther studies on the modification of root growth and ion uptake brought about by enrichment of phosphate over narrow zones of the root systems.  c19751 aSAKER, L. R.  tAnnual Report 1975. Agricultural Research Council, Letcombe Laboratory, p. 15-17, 1975.