TY  - BOOK
AU  - Coursey,Philip Roy
TI  - Telephony without wires
U1  - 621.3845 
PY  - 1919///
CY  - London
PB  - Wireless Press
KW  - Telegraphy, Wireless
KW  - Wirelss communication systems
KW  - Telegraph
KW  - Mobile communication systems
N1  - Includes index
ER  -