00522    a2200169   4500020001500000082001700015100002400032245003900056260005100095300001800146650003100164650002300195650006000218700002500278700002400303700002500327  a0521368863  a631.523bUSE  aBrown, A.H.D. eed.  aThe use of plant genetic resources  aCambridgebUniversity of Cambridgec1989g1989  ax,382p.c23cm  aCultivation and harvesting  aPlant introduction  aProduction of propagational organisms and new varieties  aWilliams, J.T. eed.  aFrankel, O.H. eed.  aMarshall, D.R. eed.