Items where Subject is "O"

Sears List of Subject Headings (497)
- O (497)
  - O10 Obscenity Law Pornography (4)
  - O112 Optical data processing (2)
  - O116 Optical storage devices (1)
  - O117 Optics (2)
  - O122 Oranges (3)
  - O129 Ordination (1)
  - O140 Organic compounds (19)
  - O141 Organic compounds Synthesis (2)
  - O142 Organic farming (34)
  - O143 Organic gardening (1)
  - O146 Organizational behavior (47)
  - O147 Organizational change (6)
  - O149 Organized crime (2)
  - O155 Ornamental plants (2)
  - O158 Orphans (1)
  - O16 Occupational diseases (2)
  - O161 Orthopedics (1)
  - O163 Osteoporosis (2)
  - O165 Outdoor education (3)
  - O17 Occupational health and safety (25)
  - O172 Outsourcing (1)
  - O176 Oxygen (3)
  - O18 Occupational health services (7)
  - O20 Occupational retraining Unemployed Unemployment (1)
  - O21 Occupational therapy (3)
  - O22 Occupational therapy Phototherapy Radiotherapy (1)
  - O23 Occupational training (19)
  - O24 Occupational training Personnel management Vocational education (2)
  - O25 Occupations (4)
  - O26 Occupations Officials and employees (3)
  - O28 Occupied territories (1)
  - O29 Ocean (6)
  - O31 Ocean currents (2)
  - O32 Ocean energy resources (2)
  - O34 Ocean engineering (1)
  - O37 Ocean Ocean (1)
  - O38 Ocean Tides (3)
  - O4 Obedience (49)
  - O42 Ocean waves (19)
  - O44 Oceanography (1)
  - O45 Oceanography Atlantic Ocean (1)
  - O46 Oceanography Computer software (1)
  - O51 Offenses against public safety (1)
  - O54 Office buildings (1)
  - O55 Office equipment and supplies (5)
  - O56 Office man agement (1)
  - O57 Office management (18)
  - O59 Office workers (5)
  - O6 Obesity (60)
  - O67 Oil burners (1)
  - O69 Oil pollution of water (7)
  - O7 Obesity Weight gain Weight loss (8)
  - O70 Oil spills (1)
  - O71 Oil well drilling (1)
  - O72 Oil wells (1)
  - O74 Oils and fats (35)
  - O77 Old age Teenagers Youth (2)
  - O88 Online catalogs (2)
  - O89 Online chat groups (1)
  - O9 Obscenity Law (4)
  - O90 Online journalism (30)
  - O92 Only child (21)
  - O98 Open source software (1)
  - O99 Open source software Programming languages Shareware Computer soft (1)

Number of items at this level: 0.

This list was generated on Tue Feb 3 07:31:15 2026 WIB.

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