TY  - BOOK
AU  - Korta H E
AU  - Thieme J G
ED  - Seyringer H M Tr.
TI  - Teleprinter switching
U1  - 621.3825 
PY  - 1960///
CY  - London
PB  - Nostrand
KW  - Teleprinters
KW  - Wirw telegraphy
N1  - Tr. from Geman
ER  -