000			00331nam a22001337a 4500
005			20250415121850.0
008			250415b |||||||| |||| 00| 0 eng d
041			_aeng
100			_aHelson, Henry
245			_aLectures on invariant subspaces _c/ by Henry Helson
260			_anew york _bAP _c1964
300			_a130p.
942			_cBK
999			_c36273 _d36273