P - Philology. Linguistics
PA - Greek language and literature. Latin language and literature
PB - Modern languages. Celtic languages
PC - Romance languages
PD - Germanic languages. Scandinavian languages
PE - English language
PF - West Germanic languages
PG - Slavic languages. Baltic languages. Albanian language
PH - Uralic languages. Basque language
PJ - Oriental languages and literatures
PK - Indo-Iranian languages and literatures
PL - Languages and literatures of Eastern Asia, Africa, Oceania
PM - Hyperborean, Indian, and artificial languages
PN - Literature (General)
PQ - French literature - Italian literature - Spanish literature - Portuguese literature
PR - English literature
PS - American literature
PT - German literature - Dutch literature - Flemish literature since 1830 - Afrikaans literature - Scandinavian literature - Old Norse literature: Old Icelandic and Old Norwegian - Modern Icelandic literature - Faroese literature - Danish literature - Norwegian literature - Swedish literature
PZ - Fiction and juvenile belles lettres
For more detailed information, visit the Library of Congress Classification Outline.
P - Philology. Linguistics
PA - Greek language and literature. Latin language and literature
PB - Modern languages. Celtic languages
PC - Romance languages
PD - Germanic languages. Scandinavian languages
PE - English language
PF - West Germanic languages
PG - Slavic languages. Baltic languages. Albanian language
PH - Uralic languages. Basque language
PJ - Oriental languages and literatures
PK - Indo-Iranian languages and literatures
PL - Languages and literatures of Eastern Asia, Africa, Oceania
PM - Hyperborean, Indian, and artificial languages
PN - Literature (General)
PQ - French literature - Italian literature - Spanish literature - Portuguese literature
PR - English literature
PS - American literature
PT - German literature - Dutch literature - Flemish literature since 1830 - Afrikaans literature - Scandinavian literature - Old Norse literature: Old Icelandic and Old Norwegian - Modern Icelandic literature - Faroese literature - Danish literature - Norwegian literature - Swedish literature
PZ - Fiction and juvenile belles lettres