Ricardo, Harry R. The high-speed internal-combustion engine Sir Harry R. Ricardo and J. G. G. Hempson. - 5th ed. - London Blackie c1968. - vii, 378 p. 12 plates, illus. (some col.); 24 cm. Includes bibliographies references and index. ISBN: 0216890268 Subjects--Topical Terms: Internal combustion engines.