TY  - BOOK
AU  - Ratcliffe,J.A.
AU  - Appleton,E.V.
TI  - The Physical principles of wireless
U1  - 621.384 
PY  - 1934///
CY  - London
PB  - Methuen
KW  - Wireless communication systems
KW  - Radio
KW  - Antennas
KW  - Transmitters and transmission
KW  - Receivers and reception
KW  - Telephone, wireless
ER  -