PN - General Literature 52,313
PS - American Literature 26,219
PR - English Literature 17,137
P - Philology and Linguistics 11,498
PQ - French, Italian, Spanish, Portuguese Literature 6,003
PZ - Fiction 3,309
PE - English Languages 2,670
PA - Latin and Greek 2,356
PT - European, Asian and African Literature 1,907
PL - Eastern Asia, Africa, Oceania 1,885
PG - Slavic, Baltic, Abanian Languages 1,428
PJ - Oriental 989
PC - Romanic Languages 748
PK - Indo-Iranian 355
PM - Hyperborean, Indian, and Artificial Languages 346
PF - West Germanic Languages 268
PB - Modern and Celtic Languages 179
PD - Germanic Languages 143
PH - Uralic, Basque Languages 85