00453naa a2200157 a 450000100080000000500110000800800410001910000200006024500730008026000090015365300200016265300190018265300090020170000190021077300660022910493792006-10-24       1976    bl ---       0--  u    #d1 aDAVIDSON, J. M.  aSymposium the plant root; soil physical aspects of root development.  c1976  aDesenvolvimento  aFisica do solo  aRaiz1 aHAMMOND, L. C.  tSoil Crop of Science Society of Floridagv. 36, p. 1-4. 1976.