B.9. Roman Alphabet Abbreviations (Appendix B: Abbreviations)
Department:
Use also in headings the abbreviation "Dept." for the English word "Department" in the following situations:
1. the word refers to the name of the body represented by the heading rather than the name of another body;
2. the word means a division or section of a larger organization.
Consider headings containing "Dept." as AACR2 although appendix B.9 does not authorize the abbreviation for headings.
See also: