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040 _e134782
_aMAIN
041 _aEnglish
082 _a515.353 S22E
100 _aSneddon, Ian N
245 0 _aElements of partial differential equations
260 _aNew Delhi
_bMcGraw-Hill
_c1957
300 _a327 p.
942 _cBK
999 _c91585
_d91585