http://dewey.info/scheme/edition/e23/ en
417 Dialectology and historical linguistics
417.2 Dialectology
417.2091732 Urban dialects 417.22 Pidgins, creoles, mixed languages
http://dewey.info/scheme/edition/e22/ de
417 Dialektologie und historische Linguistik
417.2 Dialektologie
417.2091732 Urbane Dialekte, . . . 417.22 Pidgin-Sprachen, Kreolsprachen, Mischsprachen
Dewey Decimal Classification
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