00302nam a2200121 a 450000500170000002000150001708200180003210000170005024500330006726000370010030000240013750000190016120251203112334.0  a8170290291  a005.133DbSIM  aSimpson,Alan  aUnderstanding DBase III plus  aNew delhibBPB publicationc1986  ax.,414p.c18cm.bPB  aincludes index