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| 008 | 220907s9999 xx 000 0 und d | ||
| 020 | _a9786214250059 | ||
| 040 |
_aGS-LRC _cGS-LRC |
||
| 100 | _aTheresa Marie B. Serrano | ||
| 245 | 0 | _aMathTek 2 | |
| 250 | _a2nd | ||
| 260 |
_aTechFactors Inc. ,Quezon City _bTechFactors Inc. _c2018 |
||
| 300 | _a262 | ||
| 942 | _cBK | ||
| 999 |
_c1921 _d1921 |
||