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Books & Paper
Handbook of Technical Instruction for Wireless Telegraphists, Hawkhead and Dowsett, The Wireless Press, 1917, 3. Year-Book of Wireless Telegraphy and ...
Handbook of Technical Instruction for wireless telegraphists, The Wireless Press (marconi0, jc Hawkhead & hm Dowsett, illustrated, 1918, £15.00 ...