4 treff

Technical instruction for marin radio officers
by H.M. Dowsett and L.E.Q. Walker
Bok Engelsk 1950
Handbook of technical instruction for wireless telegraphists
by H.M. Dowsett and L.E.Q. Walker
Bok Engelsk 1944
Wireless telegraphy and telephony : first principles, present practice and testing
Dowsett, H.M.
Bok Engelsk 1920
Handbook of technical instruction for wireless telegraphists
by J.C. Hawkhead ; second edition revised...
Bok Engelsk 1915