**REPRINT** Herbert, Thomas Ernest. The telephone system of

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These noise contributions are explored in more detail in the calculations of Sec. 6.4.2. This is a reciprocal device, so its multiplexing behavior is described as the reverse process of several different frequency input waveguides feeding one output waveguide, which carries a multiple-frequency signal. No serious thought is usually given to the importance of communication - mass, interpersonal, traditional and folk - in development.

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Publisher: London, New York, Whittaker and Co., 1901. (2010)


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