• 1 Electrical engineering
• 1 Telephone

• 1 AT & T Bell Laboratories
• 1 IEEE International Conference on Communications
• 1 Institute of Electrical and Electronics Engineers
• 1 Nihon Hōsō Kyōkai. Hōsō Gijutsu Kenkyūjo
• 1 Nihon Hōsō Kyōkai. Hōsō Kagaku Kiso Kenkyūjo
• 1 Nihon Hōsō Kyōkai. Sōgō Gijutsu Kenkyūjo

• 3 English

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