| 000 | 00299nam a22001097a 4500 | ||
|---|---|---|---|
| 020 | _a0198259425 | ||
| 100 |
_aO' Dell, T H _9912 |
||
| 245 |
_aInventions and official secrecy _ba history of secret patents in the United Kingdom |
||
| 260 |
_aOxford _bClarendon press _c1994 |
||
| 300 | _a149p. | ||
| 942 | _cIPR | ||
| 999 |
_c276254 _d276254 |
||