Visible speech
By: [by] Ralph K. Potter, George A. Kopp [and] Harriet C. Green.
Contributors: Kopp, George Adams, 1900- joint author.; Green, Harriet C., 1917- joint author.
Edition: [1st ed.]
Series: The Bell Telephone Laboratories series; Bell Telephone Laboratories series.
Publisher: D. Van Nostrand Co.
Published: 1947
Place of publication: New York
Language: eng; dan
Number of pages: 441
Subjects: Deaf -- Means of communication; Speech; Telephone -- Equipment and supplies
Notes: Bibliography: p. 430.