PS - American Literature 17,302
PZ - Fiction 15,597
PR - English Literature 9,737
PN - General Literature 3,781
PQ - French, Italian, Spanish, Portuguese Literature 3,229
PT - European, Asian and African Literature 1,617
PE - English Languages 1,535
PA - Latin and Greek 570
PL - Eastern Asia, Africa, Oceania 532
P - Philology and Linguistics 450
PG - Slavic, Baltic, Abanian Languages 413
PC - Romanic Languages 382
PH - Uralic, Basque Languages 318
PJ - Oriental 169
PF - West Germanic Languages 111
PK - Indo-Iranian 84
PM - Hyperborean, Indian, and Artificial Languages 66
PD - Germanic Languages 59
PB - Modern and Celtic Languages 56