651 - Geographic Subject Heading

The 651 tag is where you will find subject access points (from various thesauri as identified in the 2nd indicator) that are specific geographic names. This can include:

• Administrative divisions of an area (e.g., conservation districts, sanitation districts, utility districts, water districts, etc.)
• Astronomical objects or bodies (e.g., asteroids, comets, planets, stars, etc.)
• Historic or current human settlements (e.g., communes, extinct cities, pueblos, refugee camps, etc.)
• Infrastructure (e.g., bridges, canals, tunnels, streets, etc.)
• Real estate (e.g., estates, farms, plantations, ranches, etc.)
• Natural features (e.g., caves, deserts, seas, valleys, etc.)
• Political jurisdictions (e.g., cities, countries, provinces, states, etc.)
• Recreational areas (e.g., amusement parks, camps, esplanades, squares, etc.)

 The 651 can include the same subdivisions as the 650 tag:

• Form subdivisions -- ǂa Grand Canyon (Ariz.) ǂv Pictorial works
  
  
• General subdivisions -- ǂa Aix-en-Provence (France) ǂx Social life and customs
  
  
• Chronological subdivisions -- ǂa Greece ǂy 20th Century
  
  
• Geographic subdivisions -- this only applies when there is an intervening general subdivision that requires a partner or clarification-- ǂa Lebanon ǂx Boundaries ǂz Syria, or  ǂa Great Britain ǂx Colonies ǂz America