000 00298nam a2200121Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _aGel`Fond A O
245 0 _aCalculus Of Finite Differences
260 _bHindustan Publishing Co
_c1971
300 _a451p
650 _aMathematics
942 _cBK
999 _c30533
_d30533