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008 250425s9999 xx 000 0 und d
041 _aeng
082 _aIBM4381
245 0 _aDIFFERENTIAL OPERATORS OF MATHEMATICAL PHYSIC
250 _aS.E.
260 _aS.L.
260 _aSin Pais
_bFISI
_c1967
942 _c01
010 _a9668
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