http://dewey.info/scheme/edition/e23/ en
305.56 Lower, alienated, excluded classes
305.569 Poor people
305.56908909 Poor whites 305.56908996 Poor blacks (African origin) 305.5690973 Poor people--United States 305.5692 Homeless people
http://dewey.info/scheme/edition/e22/ de
305.56 Unterschichten, entfremdete, ausgeschlossene Gesellschaftsklassen
305.569 Arme Personen
305.56908909 Arme Wei├če 305.56908996 Arme Schwarze (Afrikanische Abstammung) 305.5690973 Arme Personen--USA 305.5692 Obdachlose
Dewey Decimal Classification
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