00310nam a2200121 a 450000100080000000500110000800800410001910000330006024500340009326000340012730000080016165300190016910122982000-05-29               bl uuuu     u0uu1 u    #d1 aACARESC (Florianopolis, SC).  aPrincipios de extensao rural.  aFlorianopolis, SC, [19--].c0  a1v.  aEXTENSAO RURAL