The elevator /
Ford, Barbara.
The elevator / by Barbara Ford. - New York : Walker, 1982. - 64 p. : ill. - Inventions that changed our lives. .
Summary: Discusses the basic principles of the elevator, the relationship between the skyscraper and the elevator, how heavy weights were lifted in ancient times, and the computerized elevators with "brains"
Elevators.
Elevators--Juvenile literature.
The elevator / by Barbara Ford. - New York : Walker, 1982. - 64 p. : ill. - Inventions that changed our lives. .
Summary: Discusses the basic principles of the elevator, the relationship between the skyscraper and the elevator, how heavy weights were lifted in ancient times, and the computerized elevators with "brains"
Elevators.
Elevators--Juvenile literature.