One last word : wisdom from the Harlem Renaissance / Nikki Grimes ; artwork by Cozbi Cabrera [and 12 others]. (OCLC #948337254)
BISAC (Book Industry Standards and Communications) is the subject category system used in bookstores, and some libraries. BISAC headings (hierarchical strings with the major category in all caps) may be used as subjects:
650 _7 ǂa JUVENILE NONFICTION / People & Places
/ United States / African American. ǂ2 bisacsh
650 _7 ǂa JUVENILE NONFICTION / History / United States
/ 20th Century. ǂ2 bisacsh
650 _7 ǂa JUVENILE FICTION / Stories in Verse. ǂ2 bisacsh
These headings correspond one-to-one with terms that may be used as a classification system:
084 __ ǂa JNF018010 ǂa JNF025210 ǂa JUV057000 ǂ2 bisacsh
In both types of fields, ǂ2 bisacsh is used to indicate the source vocabulary.
Headings and terms may be looked up on the Book Industry Study Group web site.
(Thanks to The Feral Cataloger for this excellent intro to BISAC!)