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1
An introduction to database systems / C.J. Date.
Reading, Mass. : Addison-Wesley, c2000.
xxii, 938 p. : ill. ; 24 cm.



2
An introduction to dBASE III PLUS / Roy Ageloff.
Cambridge, MA : Course Technology, c1993.
xiii, 221 p. : ill. ; 25 cm.



3
Data base management systems / Alfonso F. Cardenas.
Boston : Allyn and Bacon, c1985.
xix, 745 p. : ill. ; 25 cm.



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