Box 1:  Encoding Level

Box 2:  Meridian

Box 3: Publication Date Type (10)

Box 6:  Country of Publication Code (11)

Box 7: Projection Code

Box 8:  Record Group

Box 9:  Relief Code

Box 10:  Special Format Characteristics Code

Box 11:  Index Indicator

Box 12:  Language Code (12)

Box 17:  Cataloging Source Code

Box 27:  Bibliographical Level

Box 28:  Modified Record Code

Box 34:  Government Publication Code

Box 36:  Descriptive Cataloging Form

Box 41:  Record Type

See also:

Appendix E. Content Designation