Library
Classification and Subject Headings
Classification Table
Please refer to the IDE Classification Table.
We use this Classification Table to classify subjects for materials outside our statistical collections.
Area Code Table
Area Codes of our library are assigned to books, journals, and journal article indexes. Please refer to IDE Area Codes Table.
IDE Statistical Classification Table
Materials in the Statistical Collection are assigned call numbers using unique country and international organization codes and IDE Statistical Classification Table.
Subject Headings
Please refer to IDE Library Classification and Subject Headings for subject information.