000			00341nam a2200157Ia 4500
008			190201s9999 xx 000 0 und d
020			_a9.79E+12
082			_a4
082			_b2 GUP
100			_a"Gupta, Rajiv"
245		0	_aIntroduction To Systems
260			_aNew Delhi
260			_bN.A.I
260			_c2005
300			_a"XIII, 551"
999			_c43049 _d43049