TY  - GEN
AU  - Judd G2BCX, F. C.
TI  - Radio Amateur's Guide: radio wave propagation (hf band) 
SN  - 0434909262
U1  - 621.38411 
PY  - 1987///
CY  - London
PB  - William Heinemann Ltd.
KW  - Radio Wave Propagation
KW  - Radio Wave
ER  -