The Library of Congress Subject Headings, or LC Subject Headings are standardized lists of subject headings that are used to catalog or describe subject content of books and media. The Boreham Library uses LC Subject Headings in its online catalog. Searching the online catalog with subject headings is an efficient way of searching for books and media.

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Abbreviations:

BT — Broad Term - Indicates Subject Headings that are broader or more inclusive.

NT — Narrower Term - Indicates Subject Headings that are more specific.

RT — Related Term - Indicates Subject Headings that are related or similar.

Use — Reference from a Subject Heading that is not USED to one that is.

UF — Reference to a Subject Heading that is USED FOR a term that is recognized.

SA — See Also - This could refer to other subject terms or the term used as a subdivision of another topic.

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Standard Subdivisions:

Types of Subdivisions:	Examples:
Chronological	Operas - 20th Century
Geographical	Petroleum reserves - Alaska
Standard	Mythology - Dictionaries
Topical	Lions - Folklore

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Inverted Subject Headings:

• Embryology, Human
• Expenditures, Public
• Geometry, Analytic
• Medicine, Rural

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An example — Mythology

This is the structural outline for the subject Mythology in the Library of Congress Subject Headings.

UF		Myths		.... Use Mythology instead of the term Myths
BT		Legends		.... BT means Broader Terms for this topic
		Religion Religions
RT		Folklore		.... RT means Related Terms for this topic
		Gods Myth
NT		Animals, Mythical		.... NT means Narrower Terms for this topic
				Art and Mythology Dryads Geographical myths Healing gods Indian mythology Myth in the Old Testament Rainbow serpent Sacred marriage