Classification
ZAC - Bibliology
67
ZAB - Media studies (without bibliology)
3
ZAA - Books - general
2
ZBEBB - Subject indexing
2
AHK - Scientific work
1
ZBAA - General (incl. bibliographies)
1
ZBAB - Dictionaries
1
ZBAD - Library science
1
ZBAF - Festschrifts
1
ZBAG - Library history
1
ZBDA - Library management
1
ZBE - Library administration
1
ZBEA - Acquisition, collection development
1
ZBEBA - author, title approach
1
ZBEC - Reader services, inquiry service
1
ZBECA - Circulation
1
ZBHC - Electronic publishing
1
ZCD - Information retrieval
1
ZCE - Bibliometrics
1
ZEA - Archives
1