00514nam a22001817a 4500 230322b |||||||| |||| 00| 0 eng d 0-914894-36-6 National Science Library National Science Library D 681.3:65 M0;M2 Ullman, Jeffrey D 4117 Principles of database systems 2nd ed. London: Pitman Publishing Ltd, 1982 vii, 484p. Databases Network model udc BK 12386 12386 0 0 udc 0 D_681365_M0M2 0 18562 NSL NSL GF/Rk-3/C-20/R-4 1983-07-28 0 D 681.3:65 M0;M2 103258 2023-03-22 00:00:00 2023-03-22 BK