Jeffrey, Laura S.
American inventors of the 20th century / Laura S. Jeffrey. - Springfield, NJ : Enslow, 1996. - 112p - Collective Biographies .
Bibliographical references and index.
Profiles ten American inventors, some familiar, some unknown, who created lasers, microchips, videotape recorders, and other inventions.
0-89490-632-1
Inventors
Inventions--History--20th century
American inventors of the 20th century / Laura S. Jeffrey. - Springfield, NJ : Enslow, 1996. - 112p - Collective Biographies .
Bibliographical references and index.
Profiles ten American inventors, some familiar, some unknown, who created lasers, microchips, videotape recorders, and other inventions.
0-89490-632-1
Inventors
Inventions--History--20th century