81. Sectoral coverage and prices of carbon pricing mechanisms introduced since 1990 Bookmark Format Single study
82. SIPRI's databases (Stockholm International Peace Research Institute) Bookmark Format Data archive or collection
87. Transition to agriculture and first state presence: A global analysis Bookmark Format Single study
91. United Nations Surveys of Crime Trends and Operations of Criminal Justice Systems (1970+) Bookmark Format Series - ongoing
100. Women's International Nongovernmental Organizations, 1950-2013 Bookmark Format Series - completed