000			00304pam a2200133a 44500
008			160408b xxu||||| |||| 00| 0 eng d
082			_a005.74 _bSI22R
100			_a
245	1		_aSIGMOD RECORD MARCH 1992
260			_a _bAcm Press, New York _c
300			_a171
964			_gCIRC
997			_aA113511 C
999			_c327744 _d327744