Library of Congress >> MARC >> Bibliographic >> 5XX  >> 506

506 - Restrictions on Access Note (R)


MARC 21 Bibliographic - concise
May 2019

Information about restrictions imposed on access to the described materials.

Indicators

First - Restriction
# - No information provided
0 - No restrictions
1 - Restrictions apply
Second - Undefined
# - Undefined

Subfield Codes

$a - Terms governing access (NR)
Legal, physical, or procedural restrictions imposed on individuals wishing to see the described materials.
$b - Jurisdiction (R)
Name of a person, an institution, or a position or function within the institution, by whom or which the terms governing access are imposed and/or enforced, and to whom the restriction may be appealed.
$c - Physical access provisions (R)
Arrangements required for physical access.
$d - Authorized users (R)
Class of users or specific individuals (by name or title) to whom the restrictions in subfield $a do not apply.
$e - Authorization (R)
Source of authority for the restriction.
$f - Standardized terminology for access restriction (R)
Data taken from a standardized list of terms indicating the level or type of restriction.
$g - Availability date (R)
Date when the resource changes its access status, e.g., when it becomes freely available. Preferred structure for the date is according to Date and Time (ISO 8601): yyyymmdd.
$q - Supplying agency (NR)
A MARC Organization Code, ISIL, or textual name of the organization or project responsible for the data in the field.
$u - Uniform Resource Identifier (R)
Uniform Resource Identifier (URI), for example a URL or URN, which provides electronic access data in a standard syntax. The data that is accessed by the URI contains additional information about access restrictions.
$2 - Source of term (NR)
MARC code that identifies the source of the term used to record the restriction in subfield $f. If terms from different sources are needed, separate fields should be used. Code from: Access Restriction Term Source Codes.
$3 - Materials specified (NR)
$5 - Institution to which field applies (NR)
See description of this subfield in Appendix A: Control Subfields.
$6 - Linkage (NR)
See description of this subfield in Appendix A: Control Subfields.
$8 - Field link and sequence number (R)
See description of this subfield in Appendix A: Control Subfields.

Examples

506 0#$aAccess copy available to the general public.$fUnrestricted$2star$5MH
506 ##$aClassified.
506 ##$aFor official use only.
506 1#$3Office files of Under Secretary$aNo one may examine these records or obtain information from them or copies of them except by written permission;$bSecretary of the Treasury or his duly authorized representative;$cKept in remote storage; access requires 24 hours advance notice.
506 ##$aRestricted access;$cWritten permission required;$bDonor.
506 1#$aRestricted: cannot be viewed until 2010;$dMembers of donor's family.
506 ##$aClassified under national security provisions;$bDepartment of Defense;$eTitle 50, chapter 401, U.S.C.
506 0#$aAccess copy available to the general public.$fUnrestricted$2star$5MH
506 ##$fUnrestricted online access$2star
506 ##$3Use copy$aAccess available to account holders only.$fOnline access with authorization$2star
506 ##$3Use copy$aIn copyright material. Searches will return text snippets only.$fPreview only$2star
506 ##$aClosed until January 1, 2068.$fNo online access$2star
506 ##$3Master copy$fNo online access$2star
506 0#$aOpen access$g20190207
506 ##$aSome restrictions apply. Consult restricted access file for restriction details:$u[URI]
506 1#$aAccess restricted to users with a valid Harvard ID.$fLicense$2star$5MH

Library of Congress >> MARC >> Bibliographic >> 5XX  >> 506
(05/15/2019)
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