00403naa a2200133 a 450000100080000000500110000800800410001910000190006024500660007926000090014565000180015465000100017277300870018218332552010-05-05       1978    bl ---       0--  u    #d1 aSAGE, G. C. M.  aThe contribution of plant breeding to higher yields of wheat.  c1978  aProdutividade  aTrigo  tJournal of the Science of Food and Agriculture, Londongv. 29, n. 7, p. 651, 1978.