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Library of congress subject headings

controlled vocabulary of bibliographic subject headings

Pronunciation
/ˈlaɪbəri əv ˈkɑŋɡrəs səbˈʤɛkt ˈhɛdɪŋz/
/ˈlʌɪbrəri əv ˈkɒŋɡrɛs ˈsʌbʤɛkt ˈhɛdɪŋz/