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Library of Congress Subject Areas (7306)
- B Philosophy. Psychology. Religion (1068)
  - B Philosophy (General) (3)
  - BL Religion (5)
  - BP Islam. Bahaism. Theosophy, etc (2)
  - Psychology (1043)
    - Aggressiveness (6)
      - Bullying (3)
    - Body image (26)
    - Child psychology (24)
    - Cognition (68)
    - Cognitive psychology (221)
    - Consciousness (2)
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      - Happiness (3)
      - Surprise (11)
    - Knowledge, Theory of (2)
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      - Semantics (9)
    - Organisational Psychology (6)
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      - Counseling (6)
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      - Post-traumatic stress disorder (56)
  - BJ Ethics (22)
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      - Altruism (2)
      - Reliability (10)
        Information integrity (10)
        Data integrity (7)
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- C Auxiliary Sciences of History (4)
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- D History General and Old World (344)
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- E History America (6)
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- F History United States, Canada, Latin America (3)
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- G Geography. Anthropology. Recreation (359)
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- H Social Sciences (3489)
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  - HD Industries. Land use. Labor (2144)
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        Internal Communication (6)
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        Women and Work (88)
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        Workplace Bullying (8)
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        Flexible work arrangements (16)
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    - Non Profit Organisations. Voluntary Sector. (64)
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    - Specific Industries (670)
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  - HE Transportation and Communications (37)
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  - HF Commerce (791)
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      - Workplace Stress (50)
    - Marketing (483)
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        Endorsements in advertising (15)
      - Branding (77)
      - Consumer Behaviour (277)
      - Public Relations (5)
      - e Marketing (59)
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    - Personnel Management (20)
    - Telecommunications in Business (7)
      - Mobile Telephone Networks (2)
    - Business Ethics (40)
  - HG Finance (472)
    - Banking (109)
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      - Bankruptcy (2)
    - Financial Services (92)
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      - Investment Companies. Investment Trusts. Mutual Funds. (28)
      - Investment Strategy (10)
      - Private equity (3)
    - Money (50)
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      - Digital currency (11)
        Cryptocurrencies (5)
    - Securities Markets (1)
    - Share Ownership (3)
    - Financial Management (16)
    - Fintech (32)
  - HJ Public Finance (10)
    - Taxation (6)
  - HM Sociology (224)
    - Leadership (107)
    - Organisational Behaviour (21)
      - Organisational Culture (14)
    - Groups and Organisations (8)
    - Information Science (86)
      - Communication (81)
        Medical Informatics (63)
  - HN Social history and conditions. Social problems. Social reform (67)
    - Community Development (52)
    - Prisons (5)
  - HQ The family. Marriage. Woman (271)
    - Children (129)
      - Child Development (84)
      - Children's Rights (2)
    - Gender (73)
    - Domestic Violence (10)
    - Relationships (7)
    - Sexual life (8)
      - Sexual minorities (8)
  - HS Societies secret benevolent etc (1)
  - HT Communities. Classes. Races (67)
    - Racism (3)
    - Rural Sociology (2)
    - Urban Sociology (19)
      - Urban Renewal (2)
    - China (11)
    - Immigrant Communities (20)
  - HV Social pathology. Social and public welfare (227)
    - Asylum Seekers and Refugees (5)
    - Charity Organisations (15)
    - Child Protection (4)
    - Criminology (62)
      - Crimes and Offences (56)
        Cyber Crime (27)
        Harassment (1)
        Sexual harassment (1)
        Money Laundering (3)
    - Police. Garda. (10)
      - Garda Sichana Ombudsman Commission (1)
    - Discrimination (39)
      - Age discrimination (3)
    - Welfare of older people (68)
  - Economics (162)
    - Business (28)
      - Accounting (4)
    - Macroeconomics (11)
    - Microeconomics (56)
      - Production (Economic theory) (55)
        Industrial productivity (55)
        Labor productivity (54)
    - Wealth (14)
      - Income (6)
        Retirement income (5)
        Pensions (5)
      - Poverty (4)
        Homelessness (2)
- J Political Science (123)
  - JA Political science (General) (8)
  - JF Political institutions (General) (8)
    - Public Administration (6)
      - eGovernment (2)
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      - Government Departments (11)
  - JQ Political institutions Asia (1)
  - JS Local government Municipal government (49)
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  - JV Colonies and colonization. Emigration and immigration. International migration (25)
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- K Law (57)
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        Restorative justice (2)
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- L Education (623)
  - L Education (General) (59)
  - LB Theory and practice of education (432)
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      - Assessment (6)
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      - Secondary School Teachers (5)
    - Early childhood education (140)
  - LC Special aspects / Types of education (253)
    - Blended Learning (30)
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      - M-Learning (Mobile Learning) (8)
    - E-Learning (159)
      - M-Learning (Mobile Learning) (8)
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    - LC5201 Education extension. Adult education. Continuing education (35)
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    - Vocational Education (11)
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    - Education for the Learning Disabled (14)
    - Learning disabilities (12)
  - LF Individual institutions (Europe) (10)
  - LG Individual institutions (Asia. Africa) (1)
  - Group work in education (4)
- M Music and Books on Music (40)
  - M Music (39)
  - MT Musical instruction and study (2)
- N Fine Arts (20)
  - N Visual arts (General) For photography, see TR (1)
  - ND Painting (2)
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  - NX Arts in general (4)
- P Language and Literature (198)
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- Q Science (3602)
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    - Electronic computers. Computer science (3281)
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- R Medicine (737)
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        COVID-19 Pandemic, 2020- (27)
- S Agriculture (44)
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- T Technology (3779)
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      - Cloud computing (508)
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      - Electronic computers. Computer science (3281)
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- U Military Science (5)
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- V Naval Science (2)
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- Z Bibliography. Library Science. Information Resources (492)
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- A General Works (2)
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