00674nam0-22002411i-450-990001140120403321000114012FED01000114012(Aleph)000114012FED01000114012--------d--------km-y0itay50------baeng<<The >>Theory of Ultrafiltersby Comfort- NegrepontisBerlin [etc.]Springer-Verlag1974Comfort,W.wistar345927Negrepoints,S.ITUNINARICAUNIMARCBK990001140120403321C-28-(21116145MA1MA1Theory of Ultrafilters344234UNINA