| 000 | 00510 a2200253 4500 | ||
|---|---|---|---|
| 001 | 108750 | ||
| 020 | _a | ||
| 041 | _aeng | ||
| 080 | _a608 Cro | ||
| 245 | _aDiscoveries and inventions of the 20th century | ||
| 250 | _a4th rev ed | ||
| 260 | _aLondon | ||
| 260 | _bRoutledge & Kegan Paul | ||
| 260 | _c1955 | ||
| 300 | _axvii,432 p. | ||
| 300 | _c20.5 cm | ||
| 490 | _a | ||
| 100 | _aCrowther, J.G. | ||
| 700 | _a | ||
| 650 | _a | ||
| 650 | _aDiscoveries(In science) | ||
| 942 | _cBK | ||
| 942 | _2UDC | ||
| 999 |
_c116407 _d116407 |
||