000			00299nam a2200121Ia 4500
008			210324s1972 xx 000 0 und d
082			_a164 _bCRO/W
100			_aCrossley _9341393
245			_aWhat is mathematical logic.
260			_c1972
650			_aNO SUBJECT _9341394
700			_aN.A. _9341395
999			_c281014 _d281014