PN - General Literature 13,806
PR - English Literature 12,422
PS - American Literature 11,591
P - Philology and Linguistics 6,830
PQ - French, Italian, Spanish, Portuguese Literature 3,999
PZ - Fiction 2,294
PE - English Languages 1,643
PA - Latin and Greek 1,612
PT - European, Asian and African Literature 1,307
PL - Eastern Asia, Africa, Oceania 1,293
PG - Slavic, Baltic, Abanian Languages 990
PJ - Oriental 827
PC - Romanic Languages 644
PM - Hyperborean, Indian, and Artificial Languages 287
PK - Indo-Iranian 279
PF - West Germanic Languages 242
PB - Modern and Celtic Languages 169
PD - Germanic Languages 113
PH - Uralic, Basque Languages 62