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For a subject search, select a particular language, and a specific subject within it, ex. Hebrew language, Hebrew literature.
For books on critical analysis of individual authors or their works, select "Subject contains" and add terms "criticism and interpretation" to your specific search.
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You can use the following Library of Congress classification range to browse the book collection in BRL:
Hebrew language PJ4501-4937
Hebrew literature PJ5001-5060
Yiddish language PJ511-5119
Yiddish literature PJ5120-5192
Limit your search to NYPL's research collection. Keep in mind that many items are shelved off site and must be requested in advance.