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Telephone Communication System of the United States: A General Description of the Telephone Communication System of the United States Outlining the Organization, Types of Service and Development Work of the Bell System

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Thermionic Work Function of Oxide-Coated Platinum: A Study of the Thermodynamic Relations Involved in the Thermal Emission of Electrons from Platinum Coated with Oxides of Barium and Strontium

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Transatlantic Radio Telephone Transmission: An Analysis of Observations Obtained from Two Years of Transatlantic Transmission

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Transatlantic Radio Telephony

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