00345nam a2200133Ia 45000030006000000080041000060400015000471000021000622450056000832500010001392600033001495460012001820050017001940STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aWorswick, G.D.N.  aConcept and measurement of involuntary unemployment  aFifth  bGeorge Allen and Unwinc1976  aEnglish20220125165659.0