00309nam a2200109Ia 4500008004100000040003800041100002100079245002600100260004100126300001300167653001900180220119s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aLittlejohn, John 0aSocial stratification  bGeorge Allen and UnwinaLondonc1972  a150p. p.  aSocial Classes