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| 999 |
_c141366 _d141365 |
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| 005 | 20220105094147.0 | ||
| 008 | 200806s9999 xx 000 0 und d | ||
| 041 | _aEN | ||
| 082 |
_a515.353 _bOPE _223 |
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| 110 | _aTHE OPEN University of Sri Lanka | ||
| 245 | 0 | _aMathematical methods - I: unit 4-second-order partial differential equations-AMU/2102 | |
| 260 |
_a[United Kingdom] _bThe Open University _c1985 |
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| 300 | _aNo paging | ||
| 509 | _aNS | ||
| 942 | _cPRP | ||