2XX, 3XX - Complex Subject References-General
  Information
  
  
    MARC 21 Authority Data - Full
  
  
    October 2009
  
  
  
    "Full" documentation refers to the MARC
    21 Format for Authority Data that contains detailed
    descriptions of every data element, along with examples,
    input conventions and history sections.
  
  
    "Concise" documentation refers to the
    MARC 21 Concise Format for Authority Data that
    contains abridged descriptions of every data element, along
    with examples.
  
  
    260 - Complex See Reference - Subject (R)
    
Full | 
Concise
   
  
    360 - Complex See Also Reference - Subject
    (R) 
Full | 
Concise
   
  
  DEFINITION AND SCOPE
  Fields 260 and 360 are used to record information about
  unauthorized forms of subject headings, different authorized
  forms of subject headings, and other variants not chosen as the
  authorized form when the relationships cannot be adequately
  conveyed by one or more simple cross references. For more
  information about references and tracings, see the Tracings
  and References-General Information section.