TY  - BOOK
AU  - Grover,J.H.H.
TI  - Aircraft communications systems
U1  - 621.384191 23
PY  - 1958/// [c1957]
CY  - London
PB  - Heywood & Company Ltd.
KW  - Airplanes
KW  - Radio equipment
N1  - Includes Index
ER  -