The Deaf-mutes' friend
1.1869,1 - 1.1869,12; mehr nicht digitalisiert
Online-Ressource
Journal
Electronic Resource
Unknown
Record-player "voice" for mutes
NTRS | 1977
|Eine Frage des Mutes - MoMbike Cup 450
Automotive engineering | 2015
|Telephone Instrument for the Deaf
NTRS | 1985
|