001: 20697
003: Starlibrary PMS 4.5
005: 20180430
066: ^aC..O
072: ^aINCORPORATING UNIX AND MS- DOS
082: ^a005.43
100: ^aC. RITCHIE
240: ^aOPERATING SYSTEMS INCORPORATING UNIX AND MS- DOS
245: ^aOPERATING SYSTEMS INCORPORATING UNIX AND MS- DOS
260: ^c1993
650: ^a OPERATING SYSTEMS