Hill, Edward, 1938- A comparative study of very large data bases/ Edward Hill, Jr. - Berlin ; New York: Springer-Verlag, 1978. - x, 140 p.: ill.; 25 cm. - Lecture notes in computer science, 59. . A revision of the author's thesis, George Washington University, 1977. Bibliography: p. [134]-140. ISBN: 0387086536 LCCN: 77029264 //r942 Subjects--Topical Terms: Database management.Databases. Dewey Class. No.: 001.6/42