PN - General Literature 53,282
PR - English Literature 46,677
PQ - French, Italian, Spanish, Portuguese Literature 41,096
PS - American Literature 34,720
PT - European, Asian and African Literature 17,832
P - Philology and Linguistics 11,361
PA - Latin and Greek 10,198
PL - Eastern Asia, Africa, Oceania 7,492
PG - Slavic, Baltic, Abanian Languages 6,786
PE - English Languages 3,762
PJ - Oriental 3,344
PC - Romanic Languages 2,580
PK - Indo-Iranian 1,109
PZ - Fiction 1,039
PB - Modern and Celtic Languages 814
PF - West Germanic Languages 750
PM - Hyperborean, Indian, and Artificial Languages 536
PD - Germanic Languages 314
PH - Uralic, Basque Languages 174