5/4/2019
copyright J.Paul Getty TrustIntroduction to the AATrevised May 2019 For educational purposesWhat is this code? A special thesaurus code required by somecatalogers who use the MARC
In early releases of the AAT, alpha-numeric codes (ClassificationNotation) were used to allow the construction of the hierarchies
Upper levels of this notation isretained in the Facet/HierarchyCodeWith modern methods of constructing hierarchies, the facet codes are needed by very few usersfacet/hierarchy Code
Patricia Harpring © 2019 J. Paul Getty Trust. For educational purposes only. Do not distribute.