121. Sectoral coverage and prices of carbon pricing mechanisms introduced since 1990 Bookmark Format Single study
122. SIPRI's databases (Stockholm International Peace Research Institute) Bookmark Format Data archive or collection
123. State Fragility Index and Matrix, Time-Series Data, 1995-2018 Bookmark Format Series - completed
127. Transition to agriculture and first state presence: A global analysis Bookmark Format Single study
131. United Nations Surveys of Crime Trends and Operations of Criminal Justice Systems (1970+) Bookmark Format Series - ongoing