000 00646nam a2200241Ia 4500
003 OSt
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024 _a21979
037 _cTextual
040 _aCSL
_beng
_cCSL
041 _aeng
082 _aB313, K52
100 _aGlazman I M
245 0 _aDirect methods of qualitative spectral analysis of singular differential operators
260 _c1952
300 _ap.
_ccm.
490 _aIsreal program for scientofic translations
942 _hB313, K52
_cTEXL
_2CC
999 _c97816
_d97816