Constance, John Dennis How to become a professional engineer John D. Constance. - 2d ed. - New York McGraw-Hill [1966] - xvii, 294 p. illus. 921004 Includes bibliographies. LCCN: 65026766 Subjects--Topical Terms: Engineering--Vocational guidance. LC Class. No.: TA157 / .C6 1966 Dewey Class. No.: 620.0023