TY  - BOOK
AU  - Smith,Sydney F.
TI  - Telephony and telegraphy: an introduction to instruments and switching systems (electromechanical and reed-electronic) 
SN  - 0198593589 
U1  - 621.3841 
PY  - 1978///
CY  - Oxford, New York
PB  - Oxford University Press
KW  - Telephone
KW  - Telegraph
N1  - First ed. published in 1969 under title: Telephony & telegraphy A; Includes index
ER  -