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| 082 |
_a515.64 _bLAV _223 |
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| 100 | _aLAVRENTEV, M.A. | ||
| 245 |
_aVariational methods for boundary v alue problems for systems of elliptic equations / _c[by] M.a.Lavrentev |
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| 260 |
_aNew York _bDover pub. _c1963 |
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| 300 | _a153 p. | ||
| 500 | _aIncludes references and index. | ||
| 942 | _cS | ||