http://dewey.info/scheme/edition/e23/ en
303.3 Coordination and control
303.38 Public opinion
303.380973 Public opinion--United States 303.385 Prejudice 303.386 Opinions held by groups of people with specific attributes 303.387 Opinions held by ethnic and national groups 303.388 Opinions held by occupational groups
Dewey Decimal Classification
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