000 00313nam a2200133Ia 4500
008 240723s9999 xx 000 0 und d
041 _aEnglish
084 _aX
_bP
245 0 _aElement Differential Equation
260 _aDelhi
_bPitambar Pub. Co.
_c1999
300 _ap324
650 _aCommerce
942 _cBK
999 _c329264
_d329264