TY  - BOOK
AU  - Gust,Friedrich Wilhelm
TI  - The blind telephonist: technology and organisation of a vocation for the blind 
U1  - 621.385 23
PY  - 1957///
CY  - Mûnchen
PB  -  Siemens & Halske Aktiengesellschaft
KW  - Telephone
KW  - Telefonia
ER  -