000			00336nam a2200157Ia 4500
008			190201s9999 xx 000 0 und d
020			_a8122406599
082			_a621
082			_b4021 R
100			_aRao Y.V.C.
245		0	_aTheory And Problems of T
260			_aNew delhi
260			_bN.A.I.
260			_c1994
300			_a623
999			_c36977 _d36977