2003 - Business Data Communications Introductory Concepts and Techniques Fourth Edition (Paperback) ISBN-13: 9780789568069 ISBN-10: 0789568063 Genre: Computers & Technology ? 2000 - Business Data Communications Introductory Concepts and Techniques Third Edition (Paperback) ISBN-13: 9780789559586 ISBN-10: 0789559587 Genre: Computers & Technology ? 1997 - Business Data Communications Introductory Concepts and Techniques 2nd Edition (Paperback) ISBN-13: 9780789542878 ISBN-10: 0789542870 Genre: Business & Money ? |