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      - HE9761-9900 Air transportation. Airlines (3)
  - HF Commerce (1001)
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    - HF5001-6182 Business (910)
      - HF5381-5386 Vocational guidance. Career development (9)
      - HF5387-5387.5 Business ethics (7)
      - HF5410-5417.5 Marketing. Distribution of products (402)
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      - HF5460-5469.5 Department stores. Mail order business. Supermarkets. Convenience stores (2)
      - HF5469.7-5481 Markets. Fairs (8)
      - HF5546-5548.6 Office management (129)
        HF5548.32-.34 Electronic commerce (67)
      - HF5548.7-5548.85 Industrial psychology (43)
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      - HF5601-5689 Accounting. Bookkeeping (49)
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  - HG Finance (571)
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      - HG9969.5-9999 Other insurance Including automobile, burglary, credit, disaster, title insurance (1)
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      - HQ1060-1064 Aged. Gerontology (Social aspects). Retirement (7)
      - HQ755.7-759.92 Parents. Parenthood Including parent and child, husbands, fathers, wives, mothers (2)
      - HQ760-767.7 Family size (1)
      - HQ767.8-792.2 Children. Child development Including child rearing, child life, play, socialization, children's rights (2)
      - HQ793-799.2 Youth. Adolescents. Teenagers (6)
      - HQ799.95-799.97 Adulthood (1)
      - HQ801-801.83 Man-woman relationships. Courtship. Dating (1)
  - HS Societies secret benevolent etc (1)
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  - HT Communities. Classes. Races (12)
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      - HT165.5-169.9 City planning (2)
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  - H1-99 Social Sciences (General) (126)
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  - HV Social pathology. Social and public welfare. Criminology (72)
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