| 000 | 00422pam a2200145a 44500 | ||
|---|---|---|---|
| 040 | _aP K Kelkar Library, IIT Kanpur | ||
| 082 |
_a608.7 _bC86d4 |
||
| 100 | _aCrowther, James Gerald | ||
| 245 | 1 |
_aDiscoveries and inventions of the 20th century _cJames Gerald Crowther |
|
| 250 | _a4th rev. | ||
| 260 |
_aLondon _bRoutledge & K. Paul _c1957 |
||
| 300 | _axvii, 432p | ||
| 650 | _aInventions | ||
| 997 | _a5963 s C | ||
| 999 |
_c433993 _d433993 |
||