00283nam a2200109Ia 4500082002000000100005700020245001300077260005200090300002100142500000500163700000500168  a510.6bAm512.12  aAmerican Mathematical Society translations, series 2  aPapersb  aProvidencebAmerican Mathematical Societyc1966  aV.12 - iv, 342p.  a  a