Goodrich, Ward L., The modern clock : a study of time keeping mechanism ; its construction, regulation and repair / by Ward L. Goodrich. - Second edition. - ix, 502 pages : illustrations ; 20 cm Includes index. LCCN: 50058294 Subjects--Topical Terms: Clocks and watches.Clocks and watches. Subjects--Index Terms: Clock (general) USA Reference Goodrich, Ward L.