5/4/2019
copyright J.Paul Getty Trust
Introduction to the AAT
revised May 2019 For educational purposes
What is this code? A special th
esaurus code required by some
catalogers who use the MARC
In early releases of the AAT, al
pha-numeric codes (Classification
Notation) were used to allow the construction of the hierarchies
Upper levels of this notation is
retained in the Facet/Hierarchy
Code
With modern methods of constructing hierarchies, the facet codes are needed by very few users
facet/hierarchy Code
Patricia Harpring © 2019 J. Paul Getty Trust. For educational purposes only. Do not distribute.