00580nam0-22002291i-450-990001305570403321000130557FED01000130557(Aleph)000130557FED0100013055720000920d--------km-y0itay50------baengINVARIANT theory.by SPRINGER T.A.Springer,T.A.59188ITUNINARICAUNIMARCBK990001305570403321C-20-(58519016MA1MA1INVARIANT theory383224UNINAING01