For languages with non-roman scripts (such as Devanagari, Arabic, and others), most library materials use transliteration. Library transliteration follows "Library of Congress Romanization Tables" for each language. To search the library materials for words in these languages, use LC tables to transliterate the original non-roman script for each language, such as Bengali ; Gujarati ; Hindi ; Marathi ; Panjabi (Punjabi) ; Sinhalese ; Sanskrit and Prakrit ; Tamil ; Tibetan ; Urdu.
Library of Congress subject headings are the vocabulary by which librarians describe and organize items in the collection. Subject headings may be different from the natural language used to describe topics:
| Natural language | Library of Congress subject headings | |
| rights of women in India | > | Women's rights India or Women Legal status, laws, etc. India |
| social relations in Pakistan | > | Ethnology Pakistan or Pakistan Social life and customs |
| Sri Lankan civil war | > | Sri Lanka History Civil War, 1983-2009 |
To find relevant subject headings,
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