00832nam0-22003251i-450-9900012709504033210-471-99514-2000127095FED01000127095(Aleph)000127095FED0100012709520000920d1977----km-y0itay50------baengLectures in semigroupsMario PetrichLondonJohn Wiley & Sonsc1977viii, 168 p.ill.25 cmSemigruppiMatriciDecomposizione512.2Petrich,Mario58119ITUNINARICAUNIMARCBK99000127095040332110-C-419500MA1MA120-01Lectures in semigroups380377UNINAING01