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Divided multiple switchboards: An efficient telephone system for the world's capital

 

作者: W.Aitken,  

 

期刊: Journal of the Institution of Electrical Engineers  (IET Available online 1903)
卷期: Volume 32, issue 162  

页码: 795-822

 

年代: 1903

 

DOI:10.1049/jiee-1.1903.0036

 

出版商: IEE

 

数据来源: IET

 

 

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