00386    a2200133   4500020001400000082001600014100002300030245007000053260005000123300002000173650002000193650001200213650002700225  a070841373  a575.54bRUS  aRussell, R. Scott   aPlant root systems btheir function and interaction with the soil  aEnglandbMcGraw-Hill Book Companyc1977g1977  axii,298p.c23cm  aROOT AND LEAVES  aBIOLOGY  aGENETICS AND EVOLUTION