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| 040 | _cBD-ChCU | ||
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_aSmirnov. M.M. _914953 |
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| 245 |
_aSecond- order partial differential equations / _cM.M. Smirnov |
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| 260 |
_aGroningen p : _bNoordhoff, _cc1966 |
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| 300 | _a192p. | ||
| 504 | _aIncludes illus. | ||
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_aEquations, Theory _914954 |
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| 700 |
_aChomets, S _eEditor _914956 |
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_2ddc _cBK _n0 |
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