00649nam0-22002411i-450-99000131199040332120071217092734.0000131199FED01000131199(Aleph)000131199FED0100013119920001205d1986----km-y0itay50------baengAlgebraic topologyLefschetz SolomonProvidenceAmerican Math Society1986Lefschetz,Solomon12523ITUNINARICAUNIMARCBK990001311990403321121-I-247883MA1MA1Algebraic topology348505UNINA