AndreaeA. R. (undated), “A Word to the Deaf”. London.
2.
AntonC. (1932) Ztschr. f. Psychol. u. Physiol. d. Sinnesorg., Abt. I., 127, 5.
3.
BashkirtseffMarie (1892), “Le Journal de Marie Bashkirtseff”. Paris.
4.
BeethovenL. (1802), Article in Groves' Dictionary of Music and Musicians, 1, 280, London, 1927.
5.
Board of Education (1938), “Report of the Committee of Enquiry into Problems relating to Children with Defective Hearing”. London.
6.
ClarkM. L.CrowdenG. P. (1939), “The Employment of the Deaf in the United Kingdom. Joint Report of the National Institute for the Deaf and the Department of Industrial Physiology, London School of Hygiene and Tropical Medicine”. London.
7.
EichholzA. (1932), “A Study of the Deaf in England and Wales”. London.
8.
EwingI. R.EwingA. W. G. (1938), “The Handicap of Deafness”. London.
9.
HaselbergG. V. (1885), “Der Verlust des Gehoers. Fliegendes Blatt zum Trost fuer Gehoerkranke”. Göttingen.
10.
Luithlen-KalbeckF. (1936) Vox, 2, No. 11, Vienna.
11.
MonroMargaret T. (1934), “Breaking Out of Prison”. London.
12.
NagerF. R. (1928), “Die Seelennot der Schwerhoerigen”. Zürich.
13.
National Institute for the Deaf, The (1939), “All about the Deaf”. London.
14.
NagerF. R. (1939), 15th Annual Report, London.
15.
Naturforschende Gesellschaft zu Zuerich (1858), “Das Forscherleben eines Gehoerlosen”. Neujahrsblatt, 60 St., Zürich.