http://dewey.info/scheme/edition/e23/ en
941.5082 1900-1999
941.50821 1900-1921
941.5082107442133 Ireland (Island)--1900-1921--exhibitions--Hammersmith and Fulham (London, England)
http://dewey.info/scheme/edition/e22/ de
941.5082 1900–
941.50821 1900–1921
941.5082107442133 Irland (Insel)—1900–1921—Ausstellungen—Hammersmith and Fulham (London, England)
Dewey Decimal Classification
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