Classification
ACA - Languages, dictionaries - general
129
ACE - Germanic languages, Indo-Germanic languages
15
YPH - Secretarial work, office management
3
AMA - Education - general
2
ACH - Romance languages
1
ACQ - Oriental languages
1
AET - Universities, academies - Europe
1
AFA - Research institutions, scientific organizations - international and supranational
1
AHK - Scientific work
1
DMC - Computer programs
1
DNC - Internet
1
EAB - Energy - dictionaries
1
EIA - Solar energy - general
1
YPB - Economy - general aspects
1
YRA - Social studies
1
YZA - Politics, political science
1
ZBAB - Dictionaries
1