Conference on Problems of the Deaf and Hard of Hearing < 1929, Washington, D.C.>. (1929). Research recommendations of the second Conference on Problems of the Deaf and Hard of Hearing, Washington, D.C., February 1 and 2, 1929. Division of Anthropology and Psychology of the National Research Council.
Chicago-Zitierstil (17. Ausg.)Conference on Problems of the Deaf and Hard of Hearing < 1929, Washington, D.C.>. Research Recommendations of the Second Conference on Problems of the Deaf and Hard of Hearing, Washington, D.C., February 1 and 2, 1929. Washington, D.C: Division of Anthropology and Psychology of the National Research Council, 1929.
MLA-Zitierstil (9. Ausg.)Conference on Problems of the Deaf and Hard of Hearing < 1929, Washington, D.C.>. Research Recommendations of the Second Conference on Problems of the Deaf and Hard of Hearing, Washington, D.C., February 1 and 2, 1929. Division of Anthropology and Psychology of the National Research Council, 1929.