000 00300 a2200121 4500
080 _a651.26
_bC 131 D
245 1 _aData management systems
_cby C. Cagan
260 _aCalifornia
_bMelville Publishing
_c1973
650 _aData Management
100 1 _aCagan, C.
_d
300 _a141 p.
901 _a125058
999 _c88012
_d88012