http://dewey.info/scheme/edition/e23/ en
305.5 People by social and economic levels
305.56 Lower, alienated, excluded classes
305.562 Working class 305.563 Agricultural lower classes 305.568 Alienated and excluded classes 305.569 Poor people
http://dewey.info/scheme/edition/e22/ de
305.5 Personen nach sozialer und wirtschaftlicher Einstufung
305.56 Unterschichten, entfremdete, ausgeschlossene Gesellschaftsklassen
305.562 Arbeiterklasse 305.563 Landwirtschaftliche Unterschichten 305.568 Entfremdete und ausgeschlossene Gesellschaftsklassen 305.569 Arme Personen
Dewey Decimal Classification
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