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The History of the Telephone

Barbara A. Somervill

出版	Child's World, 2005
主題	History / GeneralJuvenile Nonfiction / History / GeneralJuvenile Nonfiction / Language Arts / GeneralJuvenile Nonfiction / Technology / Electricity & Electronics
ISBN	15929634639781592963461
URL	http://books.google.com.hk/books?id=4LzUPAAACAAJ&hl=&source=gbs_api

註釋

From Alexander Graham Bell's earliest model to modern-day cell phones, telephones are one of our most important modes of communication. Learn about the initial attempts to transmit the human voice over wire, and discover how far telephones have progressed within the past few centuries.