Cass, Martin.
The VOR and ADF / [by] Martin Cass. - Shrewsbury : Airlife Publications, 1977. - [7], 92 p. : ill. (chiefly col.), 2 charts (1 col.) ; 23 cm.
0950454338
78325466
GB78-25236
Omnirange system.
Radio direction finders.
TL696.O5 / .C37 1977
The VOR and ADF / [by] Martin Cass. - Shrewsbury : Airlife Publications, 1977. - [7], 92 p. : ill. (chiefly col.), 2 charts (1 col.) ; 23 cm.
0950454338
78325466
GB78-25236
Omnirange system.
Radio direction finders.
TL696.O5 / .C37 1977