00345nam a22001337a 450000500170000000800410001702000200005804100080007808200150008610000340010124500300013526000380016530000080020320180201151202.0160427b        xxu||||| |||| 00| 0 eng d  a0-81-259-0790-4  aeng  b00343a004  aLeon, Alexis and mathews leon  aIntroduction to Computers  aNew DelhibLeon Techworld, c1999  a424