ZBW PM20 Logo ZBW homePM20 home
en | de

Glossary of PM20 terms

category
Entry within a category system (or: classification), e.g. the PM20 countries category system. Categories are defined by their type and a signature.
category type
Indicates the category system:
geo - PM20 countries category system
subject - PM20 subject category system
ware - PM20 ware category system
signature
(or: notation) Short code for a category within a category system, e.g. “A10” for Germany.