What makes a telephone work?
By: Written and illustrated by Len Darwin
Edition: 1st ed.
Series: The What-makes-it work books
Publisher: Little, Brown
Published: 1970
Place of publication: Boston
Language: eng
Number of pages: 58
Subjects: Juvenile literature; Telephone
Description: Explains how sound is made and transmitted, how the human voice makes sound and the human ear perceives it, how each part of a telephone instrument works and how a network functions.
Notes: "An Atlantic Monthly Press book."