151. World Military Expenditures and Arms Transfers [Trade] Series (1961-1993) Bookmark Format Series - completed
157. World's human migration patterns in 2000-2019 unveiled by high-resolution data Bookmark Format Series - completed
159. World Urbanization Prospects (1992, 1994, 1999, 2003, 2005, 2007, 2009, 2011, 2014 revisions) plus link to 2018 Bookmark Format Single study