Duffy, Joseph R. Motor speech disorders : substrates, differential diagnosis, and management. Joseph R. Duffy, - 4th Ed. - New York. Elsevier. C2020. - xi,497p.; 24CM. Include Index. ISBN: 9780323530545 Subjects--Topical Terms: Speech disorders. Dewey Class. No.: 616.8552 / DUF-M 2020 1525026