000 00568 a2200157 4500
082 _a631.523
_bREP
090 _c21885
_d34305
245 _aReport of a working group on sunflower
260 _aRome
_bInternational Board for Plant Genetic Resources
_c1989
_g1989
300 _aiii,38p.
_c30cm
440 _aEuropean cooperrative programme for the coservation and exchange of crop genetic resources
650 _aDevelopment of new varieties
650 _aCultivation and harvesting
650 _aProduction of propagational organisms and new varieties
942 _cL
999 _c49313
_d49313