| 000 | 00709nam a2200181Ia 4500 | ||
|---|---|---|---|
| 020 | _a1855610140 | ||
| 040 | _cPK-LaCSN | ||
| 082 |
_bBEL _a000 |
||
| 100 | _aHolt, Michael | ||
| 245 | 0 | _aInventions | |
| 260 |
_bBelitha Press Limited, _aLondon _c1990 |
||
| 300 | _a61 | ||
| 490 | _aBelitha information library | ||
| 520 | _aExplains the nature of inventions and patents. Discusses major 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 development of the wheel and sailing ship. Suggested level: intermediate, secondary | ||
| 942 |
_2ddc _cR |
||
| 999 |
_c243595 _d243595 |
||