Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:57:05Z No. of bitstreams: 1 S0102-33061989000300017.pdf: 828661 bytes, checksum: 3b673367a44e3a7b90ebac093f8f2039 (MD5); Made available in DSpace on 2013-08-22T18:57:05Z (GMT). No. of bitstreams: 1 S0102-33061989000300017.pdf: 828661 bytes, checksum: 3b673367a44e3a7b90ebac093f8f2039 (MD5) Previous issue date: 1989-01-01; Made availabl...