253. Transition to agriculture and first state presence: A global analysis Bookmark Format Single study
254. Transnational Relations and Regional Regulation in Ecuador, Peru and Colombia, 1975 Bookmark Format Single study
255. Transnational Social Movement Organization Dataset, 1953-2003 Bookmark Format Series - completed
260. United Nations Surveys of Crime Trends and Operations of Criminal Justice Systems (1970+) Bookmark Format Series - ongoing