000			00284nam a2200133Ia 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			_a8971
999			_c8971 _d8971
942	0	0	_01