PS - American Literature 17,625
PR - English Literature 15,406
PN - General Literature 10,743
PQ - French, Italian, Spanish, Portuguese Literature 6,116
PT - European, Asian and African Literature 3,168
PA - Latin and Greek 3,008
PG - Slavic, Baltic, Abanian Languages 2,291
PL - Eastern Asia, Africa, Oceania 1,153
P - Philology and Linguistics 1,092
PZ - Fiction 735
PE - English Languages 674
PJ - Oriental 589
PC - Romanic Languages 328
PK - Indo-Iranian 242
PH - Uralic, Basque Languages 82
PF - West Germanic Languages 74
PM - Hyperborean, Indian, and Artificial Languages 59
PB - Modern and Celtic Languages 46
PD - Germanic Languages 14