The levels described below are optional and serve as guidelines.  All of the data elements listed in each of the levels may not be present in all the records cataloged at those levels.  Ideally, all data recorded is verified, documented, and the source of the data is clear to the user.  In 0E1 and 0E2, the MARC 21 indicators have been omitted because some may vary.  For guidance concerning name, subject, genre, and title access points, see Appendix A.


0E1.  First level

0E2.  Second level

0E3.  Third level

See also:

0.  General Rules