00602nam a2200217 a 450000100080000000500110000800800410001910000120006024501350007226000170020730000100022465000110023465000170024565000170026265000150027965000100029465300220030465300110032665300180033765300290035518479111992-11-04       1991    bl uuuu     u0uu1 u    #d1 aCIMMYT.  a1990-91 CIMMYT world wheat facts and trendsbwheat and barley production in rainfed marginal environments of the developing world.  aMexicoc1991  a50 p.  aCevada  aClimatologia  aEstatística  aProdução  aTrigo  aAmbiente marginal  aICARDA  aInternacional  aPaís em desenvolvimento