Tohutoro APA (7th ed.)

Ralphs, J. D. (1985). Principles and practice of multi-frequency telegraphy. P. Peregrinus on behalf of the Institution of Electrical Engineers.

Tohutoru Kātū Chicago

Ralphs, J. D. Principles and Practice of Multi-frequency Telegraphy. London, UK: P. Peregrinus on behalf of the Institution of Electrical Engineers, 1985.

Tohutoro MLA

Ralphs, J. D. Principles and Practice of Multi-frequency Telegraphy. P. Peregrinus on behalf of the Institution of Electrical Engineers, 1985.

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