Platt, Richard.
Inventions explained : a beginner's guide to technological breakthroughs / [by] Richard Platt. - New York : Henry Holt, 1997. - 69 p. : ill. (some col.) ; 24 cm. - The Your world explained series .
Includes index.
SLJ
0805048766
97011969
Inventions--History.
Inventions--History.
T15 / .P625 1997
609
Inventions explained : a beginner's guide to technological breakthroughs / [by] Richard Platt. - New York : Henry Holt, 1997. - 69 p. : ill. (some col.) ; 24 cm. - The Your world explained series .
Includes index.
SLJ
0805048766
97011969
Inventions--History.
Inventions--History.
T15 / .P625 1997
609