000 00291nam a2200121Ia 4500
008 200906s9999 xx 000 0 und d
082 _a517.2 G661
100 _aGORAK PRASAD
245 0 _aDIFFERENTIAL CALCULUS
260 _bPOTHISHALA LTD., ALLAHBAD
_c1959
300 _a23X13
942 _cBK
999 _c61134
_d61134