00332nam a2200121 a 450000100080000000500110000800800410001910000490006024500360010926000300014530000100017565300250018511176972006-03-29       1981    bl uuuu      00u1 u    #d1 aSOCIEDADE DE AGRONOMIA DO RIO GRANDE DO SUL.  aCurso de agricultura biologica.  aPorto Alegre. 1981.c1981  a151p.  aAgricultura organica