00591nam a2200169Ia 450000500170000000800460001703700120006304000200007504100130009508400220010810000180013024501070014826000800025530000090033554600510034465000260039520250508163403.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDLbengcFEDL  aeng2eng  a370.19, HUSqFEDL  aHusen Torsten 0aSocial background and eduational career : Research perspectives on equality of educational opportunity  aParis, FrancebOrganisation for Economic Co-operation and Developmentc1972  a182p  aCentre for educational research and innovation  aEducation - Sociology