000			00337nam a2200157Ia 4500
008			190201s9999 xx 000 0 und d
020			_a81262225684
082			_a1
082			_b64 Tow
100			_aTownsent Carl
245		0	_aMastering Expert Systems
260			_aUSA
260			_bH.W.S.
260			_c1986
300			_aXIII-257
999			_c28618 _d28618