00305nam a2200121 a 450000500170000002000150001708200160003210000150004824500370006326000310010030000180013149000340014920251203090955.0  a1850911606  a005.74bJON  aJones, JA.  aDatabases in theory and practice  aLoNew Delhion: Koganc1986  a324p.c22 cm.  aNew technology modular series