167. South Sudan - High Frequency Survey: Wave 4 and Crisis Recovery Survey 2017 Bookmark Format Series - ongoing
173. Tanzania - Education Quality Improvement Programme Impact Evaluation Bookmark Format Series - ongoing
175. Third International Mathematics and Science Study: International Curriculum Analysis, 1992-1995 (TIMSS) Bookmark Format Series - ongoing
176. Trends in International Mathematics and Science Study (TIMSS) (1995+) Bookmark Format Series - ongoing
180. United Nations Surveys of Crime Trends and Operations of Criminal Justice Systems (1970+) Bookmark Format Series - ongoing