Special Instructions

• Congresses
  
  • Use for proceedings of a conference, works that are "based on a conference" or that consist of "expanded (updated) papers from a conference," or "abstracts of papers from a conference"
    
    • For works that are "based partly on a conference" or identified as an “outgrowth of a conference,” use judgment in determining whether the work contains substantial material from the conference and assign or omit the publication characteristic Congresses accordingly
      
    • If the item contains only one or two papers originally presented at a conference or a personally authored summary of a congress, do not use the publication characteristic Congresses
      
    • In case of doubt, do not assign the publication characteristic Congresses
  
  
• Dictionary
  
  • Use for reference works containing lists of words, usually in alphabetical order, giving meaning, and frequently including information about form, pronunciation, etymology, and grammar. Use with relevant specialty main headings for comprehensive lists of terms important in special fields
  
  
• Encyclopedias
  
  • Use with relevant specialty main headings for reference works containing informational articles, usually arranged in alphabetical order