Silverberg, Robert.
Bridges / by Robert Silverberg. - Philadelphia : Macrae Smith, 1966. - 189 p. : ill.
Discusses the history of bridges from ancient times to the present and describes the building of various types of bridges.
Bridges--History--Juvenile literature.
Bridges--History.
Bridges / by Robert Silverberg. - Philadelphia : Macrae Smith, 1966. - 189 p. : ill.
Discusses the history of bridges from ancient times to the present and describes the building of various types of bridges.
Bridges--History--Juvenile literature.
Bridges--History.