Lewis, Thomas Edward RPG II programming a learning system approach Thomas E. Lewis. - Dubuque, Iowa W. C. Brown Co. Publishers c1977. - xiii, 335 p. ill. Includes index. ISBN: LCCN: 75022887 Subjects--Topical Terms: RPG Computer program language LC Class. No.: QA76.73.R25 / L48 Dewey Class. No.: 001.6/424