Richards, Steve. Electronics, navigational aids and radio theory for electrotechnical officers: reeds marine engineering and technology 15 / Steve Richards. - United Kingdom: Bloomsbury Publishing Plc, c2019. - 184 pages : ill., b & w ; 24 cm. ISBN: 9781472975287 Subjects--Topical Terms: Electronics. LC Class. No.: CIR TK 5102.6 / R53 2019