1 Introduction 2 General information: The Soviet Union; Structure; Citizenship and Nationality; Economic Status; Education; Language; Religion; Composition and Distribution of Peoples; General Statistics 3 European USSR and Siberia (Peoples shown below in small type do not constitute separate Soviet 'nationalities') 4 Transcaucasia and Northern Caucasus 5 Central Asia and Kazakhstan Appendix: Non-Muslim Turkic peoples of the Soviet; Maps