Short Cuts in Figures to which is added many useful tables and formulas written so that he who runs may read

TRThe Radio Amateur's Hand Book A Complete, Authentic and Informative Work on Wireless Telegraphy and TelephonyA. Frederick CollinsTRThe Radio Amateur's Hand Book A Complete, Authentic and Informative Work on Wireless Telegraphy and TelephonyA. Frederick CollinsIFInventing for BoysA. Frederick CollinsTBThe Boys' Book of SubmarinesA. Frederick CollinsTBThe Book of Stars: Being a Simple Explanation of the Stars and Their Uses to Boy LifeA. Frederick CollinsHFHandicraft for boysA. Frederick CollinsJHJack Heaton, wireless operatorA. Frederick CollinsJHJack Heaton, gold seekerA. Frederick Collins

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