00293    a2200121   4500020001500000082001700015100001900032245003000051250000900081260003200090300002400122650002500146  a9813005548  a005.756bCOW  aCowart, Robert  aThe ABC's of dBASE iv 1.1  a2nd   aSingaporebTechc1991g1991  axxiii, 350p.c23cm.  aRELATIONAL DATABASES