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040 _aCentral Library-NITS
041 _aEnglish
082 _a515.35
_bELS
100 _aElsgolts, L.
245 _aDifferential equations and the calculus of variations
_cby L. Elsgolts
260 _aMoscow
_bMir Publishers
_c1977
300 _a440p. :ill.
500 _aIncludes index
650 _aDifferential equations
650 _aLinear equations
650 _aMathematical analysis
942 _cBK
999 _c16383
_d16383