iV 



Supplement to ''Nature^' December 29, 1923 



Gibson, Charles R., and Cole, WllUam B. Wireless 

 of To-day : dcscribinK the Growth of Wireless Telegraphy 

 and Telejihony from their Inception to the Present Day. 

 the Principles on which they work, the Methods by which 

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Goodwin, EnjJ. Vice-Admlral Sir George ; Fer- 

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 Gibson, A. H. ; Taylor, G. I. ; Geddes, A. E. M. ; 

 Drysdale, C. V. ; Hunt, F. R. W. The Mechanical 

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Grafhgny, H. de. Manuel pratioue du dessinateur 

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Huebotter, H. A. Mechanics of the Gasoline Engine. 

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Kemp, Philip. The Alternating Current Circuit. Cr. 

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Roussel, J. Wireless for the Amateur. Authorised 

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University of London : University College. Depart 

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Chemistry : Chemical Industry 



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Gl^ditsch, Mile. E., Baimie, G., Chambrier, P. de, 

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 xii -h 105. (Paris: Masson et Cie, 1923.) 10 francs. 



