Includes bibliographical references (p. 52) and index.
Contents:
Early discoveries -- Building and engineering -- Writing and printing -- Measuring time -- Studying the skies, exploring the earth -- Medicine and the human body -- Machines, ships, and trains -- Cars, planes, and rockets -- The communications revolution.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.