Instructor's Manual and Key for Mastering DOS : the complete reference / Schildt, Herbert O'Reilly (Firm) Serials Solutions C# (Computer program language) 005 HER 1992 C284 Or. Includes index. Text xxv, 949 pages ; https://ezproxy.spl.org/login?url=https://learning.oreilly.com/library/view/~/9780071741163/?ar