000 00289nam a2200121Ia 4500
008 190719s9999 xx 000 0 und d
100 _aBishan Narayan Asthana
245 0 _aSankhyaki ke siddhant
250 _a3rd
260 _aAllahabad
_bChaitanya Pub.
_c1967
650 _aMath
942 _cBK
999 _c659
_d659