000			00326nam a2200145Ia 4500
008			150614s9999 xx 000 0 und d
082			_a1
100			_aPeter Gray
245			_aLogic Algebra and Databases
250			_a0
260			_c1988
300			_a0
650			_aLogic Algebra and Databases Peter Gray
942			_cBK
999			_c1201 _d1201