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008 220919s9999 xx 000 0 und d
020 _a9780821820025
082 _bGRA
100 _aGRAG, HJORTH
245 0 _aCLASSIFICATION AND ORBIT EQUIVALENCE RELATIONS
260 _bAMERICAN MATHEMATICAL SOCIETY, AMERICAN
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300 _a195
650 _aMathematics
942 _cBK
999 _c157112
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