Hutchinson, S.E. Sawyer, S.E. Computer essentials - 2nd - IRWIN London 1996 - 295 - Applications Software Systems Software = Hutchinson, S.E. Standard No.: M Standard Tech. Report. No.: LCCN: B Nat. Bib. No.: 6150 Nat. Bib. Agency Control No.: 681.3HUT Subjects--Topical Terms: Computer Science Universal Decimal Class. No.: 681.3