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Continue to Chatதொலைபேசி உருவான வரலாறு..!! https://www.tamilexpressnews.com/history-of-the-formation-of-the-telephone/
தொலைபேசி உருவான வரலாறு..!! https://www.tamilexpressnews.com/history-of-the-formation-of-the-telephone/