Wallach, Paul Ross. Drafting / Paul Wallach. - Encino, California : Glencoe Publishing Company, c1981. - vii, 648 pages : illustration (some colored) ; 26 cm. Includes index. ISBN: 0028296001 LCCN: 80084394 Subjects--Topical Terms: Mechanical drawing. LC Class. No.: T353 / .W237 1981 Dewey Class. No.: 604.2/4