http://dewey.info/scheme/edition/e23/ en
979.4 California
979.405 1900-
979.4051 1900-1918 979.4052 1918-1945 979.4053 1945-1999 979.4054 2000-
http://dewey.info/scheme/edition/e22/ de
979.4 Kalifornien
979.405 1900–
979.4051 1900–1918 979.4052 1918–1945 979.4053 1945–1999 979.4054 2000–
Dewey Decimal Classification
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