Title from ICPSR DDI metadata of 2019-06-13.
Belgium
Denmark
Europe
France
Germany
Global
Greece
Ireland
Italy
Luxembourg
Netherlands
Portugal
Spain
United Kingdom
Persons aged 15 and over residing in the 12 member nations of the European Community: Belgium, Denmark, France, Greece, Ireland, Italy, Luxembourg, the Netherlands, Portugal, Spain, United Kingdom, and West Germany (including West Berlin).