Library of Congress >> MARC >> Bibliographic >> 3XX >> 355

355 - Security Classification Control (R)


MARC 21 Bibliographic - Full
October 2003

First Indicator
Controlled element
0 - Document
1 - Title
2 - Abstract
3 - Contents note
4 - Author
5 - Record
8 - None of the above

Second Indicator
Undefined
# - Undefined


Subfield Codes
$a - Security classification (NR)
$b - Handling instructions (R)
$c - External dissemination information (R)
$d - Downgrading or declassification event (NR)
$e - Classification system (NR)
$f - Country of origin code (NR)
$g - Downgrading date (NR)
$h - Declassification date (NR)
$j - Authorization (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Specifics pertaining to the security classification associated with the document, title, abstract, contents note, and/or the author. In addition, it can contain handling instructions and external dissemination information pertaining to the dissemination of the document, title, abstract, contents note, and author. The field may also contain downgrading or declassification data, the name of the classification system, and a country of origin code.

Used with both classified and unclassified material. It is used when the security information is too specific to be handled by field 506 (Restrictions on Access Note).

Repeatable when multiple classification and/or dissemination specifics are applicable to the record in hand.


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

First Indicator - Controlled element
What element is controlled by the security classification in subfield $a, i.e., whether it is the document as a whole or the title, abstract, contents note, or author.
0 - Document
Security classification pertains to the document as a whole.
355 0#$aUnclassified$bFOUO
1 - Title
Security classification pertains to the title in fields 21X-24X, 740 Added Entry-Uncontrolled Related Analytical Title.
355 1#$aSecret$cUK
2 - Abstract
Security classification pertains to field 520 (Summary, Etc. Note).
355 2#$aConfidential$bNOFORN
3 - Contents note
Security classification pertains to field 505 (Formatted Contents Note).
355 3#$aSecret
4 - Author
Security classification pertains to 245$c and to the 100-111 main entry and 700-711 fields.
355 4#$aUnclassified
5 - Record
Security classification pertains to the entire record.
355 5#$aClassified
8 - None of the above
Security classification pertains to other than the document, title, abstract, contents note, or author.
355 8#$aSecret
[A subject heading contains a term that is classified as secret.]
Second Indicator - Undefined
Undefined and contains a blank (#).

SUBFIELD CODES

$a - Security classification
Security classification (e.g., Unclassified, Secret, Confidential) associated with the document, title, abstract, contents note, or author.
355 0#$aRestricted
$b - Handling instructions
Handling instructions, e.g., who internally in the organization may handle or see the document, title, abstract, contents note, or author.
355 1#$aSecret$bNOFORN$bNOCONTRACT
$c - External dissemination information
External dissemination information, e.g., which foreign countries may see the document, title, abstract, contents note, or author.
355 0#$aSecret$bFRD$cAS$d010101
$d - Downgrading or declassification event
Data about the security classification, often a phrase pertaining to downgrading or declassification, e.g., OADR (which stands for "Original Agency Determination Required"). Dates relating to the downgrading or declassification are recorded in subfields $g or $h.
355 0#$aSecret$bNOFORN$bWNINTEL$bNOCONTRACT$dOADR
$e - Classification system
Name of a security classification system, not necessarily come from a controlled list.
355 0#$aTop secret$eNATO
$f - Country of origin code
Two- or three-character alphabetic MARC code indicating the country of origin of the classification. Code from: MARC Code List for Countries.
For the U.S. intelligence community, this subfield is not used if the country of origin of the classification is the United States.
355 0#$aTop Secret$cUS$cCA$fxxk
$g - Downgrading date
Date pertaining to the downgrading of the document, title, abstract, contents note, or author. Downgrading involves changes to security classification, from a higher level to lower level of classification.
355 0#$aConfidential$bNOCONTRACT$cUK$g20281001
[The review for downgrading of the classification is in October 2028.]
$h - Declassification date
Date pertaining to the declassification of the document, title, abstract, contents note, or author. Declassification involves the removal of any security classification on an item.
355 0#$aSecret$bNOFORN$h20230301
[Security classification for a document that is eligible for declassification in March 2023.]
$j - Authorization
Information that identifies by whose authority a change in security classification was made. The subfield contains a MARC code of the authorizing agency. See Appendix I: Organization Code Sources for a listing of sources used in MARC 21 records.
355 0#$aSecret$bNOFORN$h20230301$j<agency identifier>
[Security classification for a document that is eligible for declassification in March 2023.]
$6 - Linkage
See description of this subfield in Appendix A: Control Subfields.
$8 - Field link and sequence number
See description of this subfield in Appendix A: Control Subfields.

INPUT CONVENTIONS

Punctuation - Field 355 does not end with a period unless the last word in the field is an abbreviation, initial/letter, or data that ends with a mark of punctuation.

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