000			00328nam a2200121Ia 4500
005			20251007104332.0
008			251006s9999 xx 000 0 und d
100			_adouglas,ronald g.
245		0	_abanach algebra techiques in operator theory ronald g douglas
260			_a1st.ed. | N.Y. Academic
260			_c1972
942			_cBOK
999			_c5050 _d5050