Παραπομπή APA

(1952). Telephones and telegraphs private services. London: The Council for Codes of Practice for Buildings.

Παραπομπή Chicago Style

Telephones and Telegraphs Private Services. London: The Council for Codes of Practice for Buildings, 1952.

Παραπομπή MLA

Telephones and Telegraphs Private Services. London: The Council for Codes of Practice for Buildings, 1952.

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