00699nam0-22002531i-450-990001232850403321000123285FED01000123285(Aleph)000123285FED0100012328520000920d1978----km-y0itay50------baengTopics in Group Rings.by SEHGAL S K.New York [etc.]Marcel Dekker197 8.Pure and applied mathematics50Sehgal,Sudarshan K.57089ITUNINARICAUNIMARCBK990001232850403321C-8-(5020599 bisMA1MA1Topics in group rings82130UNINAING01