Pohl, Ira The nature of computation: an introduction to computer science/ Ira Pohl, Alan Shaw. - Potomac, MD: Computer Science Press, c1981. - xii, 397 p.: ill.; 24 cm. - Computer software engineering series . Includes bibliographies and index. ISBN: 0914894129 : $16.95 LCCN: 80018433 Subjects--Topical Terms: Electronic data processing. Dewey Class. No.: 004 / P748n