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Contents
Technical World Magazine | 8 |
Wireless Wonders from Vacuum Tube | 14 |
The Big Four in Water Power | 24 |
Copyright | |
40 other sections not shown
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American boat building built carry cent Chicago Company complete cost course covered develop device direct dollars electric engine equipment experience fact farm feet field fire five force four German give given guns half hand hold hundred idea inches interesting keep land less light live looks machine MAGAZINE means mechanical ment method Michigan miles month motor move offer operation pass Patent picture plant position possible practical ready result river saving School Send ship side speed steel Street supply TECHNICAL WORLD things thousand tion tires train turned United Write York young