Hutchinson,Sarah E. Computers: the user perspectives/ Sarah E.Hutchinson and Stacey C Sawyer - 2nd.ed. - Boston: IRWIN, 1990 Includes bibliographical references and index ISBN: 0256087067 LCCN: 8926917 Subjects--Topical Terms: Computers LC Class. No.: Vet. QA76.5 / Hut 1990