00282nam a2200109Ia 450000500170000000800410001708200160005810000150007424500280008926000470011730000080016420260224040836.0260224s9999||||xx |||||||||||||| ||und||  a651.260 CAG  aCagan, C.  0aData management systems  aLos Angeles, Melville Publishers Co.c1973  a141