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Class Number Format

• Spaces—Unlike LCC, there is a space between the letter(s) and the number(s). Exception: Even though W1–W9 are displayed online with a space in between, do not input a space when recording these numbers in a bibliographic record.
  
  

  Examples:
  QS 16 not QS16
  but
  W2 not W 2

• Decimals—May or may not indicate subordinate class numbers
  
  

  Example of subordinate decimal class number

  

  Example of decimal class number that is not subordinate

  

• Indentation—Indented schedule captions always indicate class numbers for subordinate concepts
  
  

  Example: Class numbers WB 146 through WB 182 are subordinate to WB 143