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Hello! Hello!: A Look Inside the Telephone
Eve Stwertka, Albert Stwertka, Mena Dolobowsky
Hardcover (Julian Messner, Oct. 1, 1991)Provides a detailed description of how a telephone works
H
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Hello! Hello! a Look Inside the Telephone
Eve Stwertka, Albert Stwertka
Paperback (Julian Messner, Oct. 1, 1991)Provides a detailed description of how a telephone works