00324naa a2200109 a 450000100080000000500110000800800410001910000250006024500450008526000090013077300750013918394212010-01-10       1938    bl ---       0--  u    #d1 aFREITAS, L. G. G. de  aA cultura do trigo no Rio Grande do Sul.  c1938  tBoletim do Ministério da Agricultura, Rio de Janeiro, p. 55-64, 1938.