000			00316nam a2200145Ia 4500
008			220421s9999||||xx |||||||||||||| ||und||
020			_c395
040			_aET
100			_aHEMANT R. OJHA
245		0	_aKNOWLEDGE SYSTEM NATURAL
260			_bCONCEPT PUB. _aDELHI
300			_a173
500			_a14681
942			_cBK
999			_c20924 _d20924