00302nam a2200133Ia 45000030006000000080041000060400015000471000018000622450025000802500010001052600024001155460012001390050017001510STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aDavid Crystal  aWhat is linguistics?  aThird  bEdward Arnoldc1974  aEnglish20220125165757.0