580  Linking Entry Complexity Note (R)

Definition

A note expressing a complex relationship between the described resource and other resources that cannot be adequately generated from the 76x-78x fields. See the 76x-78x  Linking Entry Fields–Introduction.

Use field 580 also to state a relationship when no corresponding linking entry fields are present. For example, use for:

• A regular-print reprint to provide details of the original publication
• A continuing resource bearing a relationship to a monograph or other non-serial publication
• A continuing resource bearing a relationship to one or more publications that cannot be named
• A continuing resource issued in more than one frequency when two or more records are required

When used, field 580 appears in addition to any relevant linking entry fields.

For information on punctuation, see the Punctuation section below.

1st Indicator

Undefined. The 1st indicator position is undefined and contains a blank.

	Undefined

2nd Indicator

Undefined. The 2nd indicator position is undefined and contains a blank.

	Undefined

Subfields

Punctuation

For records containing punctuation, follow these instructions:

• Include incidental punctuation needed within any subfields, e.g., commas, periods (following abbreviations or initials), etc.
• Optionally, add a terminal period at the end of the field (preceding subfield ǂ5) unless the last subfield ends with an ellipsis or period (following an abbreviation or initial)

For records containing minimal or no punctuation, include incidental punctuation needed within any subfields. Otherwise, omit the punctuation outlined above.

For more information on punctuation, including OCLC policy, see section 2.8, Punctuation.

Indexing

Field 580 is not indexed.

MARC 21

For more information, including content designator history, see MARC 21 Format for Bibliographic Data, field 580.