000 00280nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aM Roy & others
245 0 _aIntroduction to theory of equations
260 _aAgra
_bStudents Friends & Co.
_c1972
650 _aMath
942 _cBK
999 _c2721
_d2721