Classification
ACE - Germanic languages, Indo-Germanic languages
AXN - Phrase books, language courses
23
ACA - Languages, dictionaries - general
12
ACH - Romance languages
7
ACM - East european languages
7
AHK - Scientific work
3
TAA - Engineering sciences - reference books
3
YAB - Law, economy, social affairs - dictionaries
3
AAA - Encyclopedias - general aspects
2
AMA - Education - general
2
YPB - Economy - general aspects
2
YRG - Technology transfer
2
AAD - General handbooks of knowledge
1
AHH - Universities - research
1
AHN - Media and communication science
1
ASAA - Library reference works
1
ASCJ - Library catalog
1
CAE - Chemistry - general
1
DPA - Electronic data processing - applications
1
HAA - Medicine - reference books
1
HAE - Popular medicine
1
TAB - Engineering sciences - dictionaries
1
TIE - Process engineering
1
YPE - Job application, job search
1
YPGE - Human resource planning, human resource management
1