000 00266nam a2200121Ia 4500
008 161018s9999 xx 000 0 und d
100 _aPremkumar Gupta
_95651
245 _aProblems In Or
250 _a5THEd
260 _bS. Chand
300 _bRs:400
490 _a8970
999 _c8970
_d8970