Eric Walker added Cologne - Wikipedia to Cologne

Eric Walker added Cologne cathedral to switch off lights in protest at anti-Muslim march | Germany | The Guardian to Cologne, Pegida and 2005 Chancellorship of Angela Merkel

Eric Walker added German Sentenced to 14 Years for Stabbing Mayoral Candidate in Cologne - The New York Times to Mayoralty of Henriette Reker, and added Mayoralty of Henriette Reker to Cologne

Eric Walker added University of Cologne and Mayoralty of Henriette Reker and Cologne - Wikipedia and Cologne cathedral to switch off lights in protest at anti-Muslim march | Germany | The Guardian to Cologne, and added Cologne to North Rhine-Westphalia and Cities in Germany

Eric Walker added Altena and Cologne and North Rhine-Westphalia - Wikipedia to North Rhine-Westphalia, and added North Rhine-Westphalia to German states

Eric Walker added a number of topics to Cities in Germany, and added Cities in Germany to Germany and Cities in Europe

Eric Walker added 2018-09 University of Cologne study of a multiplex immunochromatographic assay to University of Cologne, and added University of Cologne to Cologne and Specific universities