00339nam a2200121Ia 45000030006000000080041000060400015000471000017000622450077000792600032001565460012001880050017002000STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aSury, B.; Ed  aCongruence Subgroup problem an elementary approach aimed at applications  bHindustan book agencyc2003  aEnglish20220125165932.0