TY  - BOOK
AU  - "Holt, Michael"
TI  - Inventions
T2  - Belitha information library
SN  - 9781855610149
U1  - 900 
PY  - 1990///
PB  - Belitha
KW  - Inventions History
N2  - Explains the nature of inventions and patents. Discusses significant inventions in the past such as the telephone, radio, the first aeroplane, the electric generator and goes back in time to early tool-making and the development of the wheel and sailing ship. Suggested level: intermediate, secondary
ER  -