| 000 | 00339nam a22001097a 4500 | ||
|---|---|---|---|
| 008 | 230902b |||||||| |||| 00| 0 eng d | ||
| 022 | _a1000-1646 | ||
| 040 |
_aNational Science Library _cNational Science Library |
||
| 245 | _aJournal of shenyang polytechnic university | ||
| 260 |
_aChina: _bShenyang Gongye Daxue Xuebao _c1979 |
||
| 942 | _cCR | ||
| 999 |
_c60187 _d60187 |
||