000 | 00539nam a22001697a 4500 | ||
---|---|---|---|
008 | 230310b |||||||| |||| 00| 0 eng d | ||
020 | _a92-805-0793-1 | ||
040 |
_aNational Science Library _cNational Science Library |
||
080 | _aD 025.4PATENt N9 | ||
245 |
_aInternational patent classification _c/ WIPO |
||
260 |
_aGeneva: _bWIPO, _c1999 |
||
490 | _a7th ed. | ||
500 | _3Vol. 3 (Section C: Chemistry; Metallurgy); ISBN: 92-805-0791-5; 281p. | ||
650 | _aLibrary science | ||
653 | _aPatent classification | ||
942 |
_2udc _cBK |
||
999 |
_c7474 _d7474 |