000			00429nam a2200157Ia 4500
008			230917s9999||||xx |||||||||||||| ||und||
020			_cPON12
040			_e13032 _aMAIN
041			_aEnglish
082			_a515.352 T531E
100			_aTitchmarsh, E C
245		0	_aEigenfunction expansions assoicated with second-order differntial equations
260			_aOxford _bClarendon Press _c1970
300			_axi,404 p.
942			_cBK
999			_c227084 _d227084