245. World Handbook of Aging and Social Security Indicators (1950-1980) Bookmark Format Series - completed
247. World Health Organization. Regional Office for Europe. Data. Bookmark Format Data archive or collection
251. World Military Expenditures and Arms Transfers [Trade] Series (1961-1993) Bookmark Format Series - completed
256. World's human migration patterns in 2000-2019 unveiled by high-resolution data Bookmark Format Series - completed
258. World Urbanization Prospects (1992, 1994, 1999, 2003, 2005, 2007, 2009, 2011, 2014 revisions) plus link to 2018 Bookmark Format Single study