The document discusses several MARC 21 fields that could potentially be used to represent open access and license information: Field 506 (Restrictions on Access Note), Field 540 (Terms Governing Use and Reproduction Note), Field 510 (Citation/References Note), Field 856 (Electronic Location and Access), and Field 912 (Designation of National Licenses and Digital Collections). It provides details on the definition, indicators, subfields, and usage of each field. It concludes by posing questions about which fields are currently used in practice for licensing, which fields are preferred, and whether any fields require changes to better represent licensing information.

1. 1
Open Access and
License Representation
in MARC 21
Reinhold Heuvelmann
Springer Nature Metadata Advisory Board Meeting
London, March 22nd, 2017

2. Table of Contents
1. Background
2. MARC 21 Field 506
3. MARC 21 Field 540
4. MARC 21 Field 510
5. MARC 21 Field 856
6. MARC 21 Field 912
7. ???
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3. | 24 | Open Access and License Representation in MARC 21 | Springer Nature MAB Meeting, London, March 22nd, 20173
. . .

4. MARC 21 Field 506
"Restrictions on Access Note" (1)
FIELD DEFINITION AND SCOPE
Information about restrictions imposed on access to
the described materials.
For published works, this field contains information on
limited distribution. For continuing resources, the
restrictions must apply to all issues.
If a note merely indicates the intended audience of a
publication and does not imply restrictions on access, it is
recorded in field 521 (Target Audience Note.)
Terms governing the use of materials after access has
been allowed are recorded in field 540 (Terms
Governing Use and Reproduction).
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5. MARC 21 Field 506
"Restrictions on Access Note" (2)
First Indicator
Restriction
# - No information provided
0 - No restrictions
1 - Restrictions apply
Second Indicator
Undefined
# - Undefined
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6. MARC 21 Field 506
"Restrictions on Access Note" (3)
Subfield Codes
$a - Terms governing access (NR)
$b - Jurisdiction (R)
$c - Physical access provisions (R)
$d - Authorized users (R)
$e - Authorization (R)
$f - Standardized terminology for access restriction (R) ...
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7. MARC 21 Field 506
"Restrictions on Access Note" (4)
Subfield Codes (continued)
$u - Uniform Resource Identifier (R)
$2 - Source of term (NR)
$3 - Materials specified (NR)
$5 - Institution to which field applies (NR)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)
| 24 | Open Access and License Representation in MARC 21 | Springer Nature MAB Meeting, London, March 22nd, 20177

8. MARC 21 Field 506
"Restrictions on Access Note" (5)
$2 - Source of term
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.
506 1#
$aAccess restricted to users with a valid Harvard ID.
$fLicense
$2star
$5MH
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9. MARC 21 Field 506
"Restrictions on Access Note" (6)
Access Restriction Source Codes
Access Restriction Sources identifies the source of terms
used to record access restrictions and assigns a code to
each source. The purpose of this list is to enable the use
of standardized terms indicating the level or type of
restriction imposed on access to the resource.
For code assignment, general structure, usage, and
maintenance guidelines see Source Codes for Vocabularies,
Rules, and Schemes.
| 24 | Open Access and License Representation in MARC 21 | Springer Nature MAB Meeting, London, March 22nd, 20179

10. MARC 21 Field 506
"Restrictions on Access Note" (7)
List of Access Restriction Source Codes
cc
Creative Commons
https://creativecommons.org/
rs
Rights Statements
http://rightsstatements.org/en
star
Standardized terminology for access restriction
http://www.oclc.org/content/dam/oclc/digitalregistry/506F_vocabulary.pdf
(DLF/OCLC Registry of Digital Masters Working Group)
[PDF: 19 KB]
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11. | 24 | Open Access and License Representation in MARC 21 | Springer Nature MAB Meeting, London, March 22nd, 201711
http://experimental.worldcat.org/marcusage/506.html

12. MARC 21 Field 540 "Terms Governing
Use and Reproduction Note" (1)
FIELD DEFINITION AND SCOPE
Terms governing the use of the materials after access
has been provided. The field includes, but is not limited
to, copyrights, film rights, trade restrictions, etc. that
restrict the right to reproduce, exhibit, fictionalize, quote,
etc.
Information about restrictions imposed on access to
the described materials is recorded in field 506
(Restrictions on Access Note).
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13. MARC 21 Field 540 "Terms Governing
Use and Reproduction Note" (2)
First Indicator and Second Indicator Undefined
Subfield Codes
$a - Terms governing use and reproduction (NR)
$b - Jurisdiction (NR)
$c - Authorization (NR)
$d - Authorized users (NR)
$u - Uniform Resource Identifier (R)
$3 - Materials specified (NR)
$5 - Institution to which field applies (NR)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)
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14. | 24 | Open Access and License Representation in MARC 21 | Springer Nature MAB Meeting, London, March 22nd, 201714
http://experimental.worldcat.org/marcusage/540.html

15. MARC 21 Field 510
"Citation/References Note" (1)
FIELD DEFINITION AND SCOPE
Citations or references to published bibliographic
descriptions, reviews, abstracts, or indexes of the
content of the described item.
Used to specify where an item has been cited or reviewed.
Citations or references may be given in a brief form (i.e.,
using generally recognizable abbreviations, etc.). The
actual text of a published description is not recorded in
field 510 but rather in field 520 (Summary, Etc. Note).
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16. MARC 21 Field 510
"Citation/References Note" (2)
First Indicator
Coverage/location in source
0 - Coverage unknown
1 - Coverage complete
2 - Coverage is selective
3 - Location in source not given
4 - Location in source given
Second Indicator
Undefined
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17. | 24 | Open Access and License Representation in MARC 21 | Springer Nature MAB Meeting, London, March 22nd, 201717
MARC 21 Field 510
"Citation/References Note" (3)
Subfield Codes
$a - Name of source (NR)
$b - Coverage of source (NR)
$c - Location within source (NR)
$u - Uniform Resource Identifier (R)
$x - International Standard Serial Number (NR)
$3 - Materials specified (NR)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

18. | 24 | Open Access and License Representation in MARC 21 | Springer Nature MAB Meeting, London, March 22nd, 201718
http://experimental.worldcat.org/marcusage/510.html

19. MARC 21 Field 856
"Electronic Location and Access" (1)
First Indicator
Access method
# - No information provided
0 - Email
1 - FTP
2 - Remote login (Telnet)
3 - Dial-up
4 - HTTP
7 - Method specified in subfield $2
Second Indicator
Relationship
# - No information provided
0 - Resource
1 - Version of resource
2 - Related resource
8 - No display constant generated
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20. MARC 21 Field 856
"Electronic Location and Access" (2)
Subfield Codes
$a - Host name (R)
$b - Access number (R)
$c - Compression information (R)
$d - Path (R)
$f - Electronic name (R)
$h - Processor of request (NR)
$i - Instruction (R)
$j - Bits per second (NR)
$k - Password (NR)
$l - Logon (NR)
$m - Contact for access assistance (R)
$n - Name of location of host (NR)
$o - Operating system (NR)
$p - Port (NR) ...
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21. | 24 | Open Access and License Representation in MARC 21 | Springer Nature MAB Meeting, London, March 22nd, 201721
MARC 21 Field 856
"Electronic Location and Access" (3)
Subfield Codes (continued)
$q - Electronic format type (NR)
$r - Settings (NR)
$s - File size (R)
$t - Terminal emulation (R)
$u - Uniform Resource Identifier (R)
$v - Hours access method available (R)
$w - Record control number (R)
$x - Nonpublic note (R)
$y - Link text (R)
$z - Public note (R)
$2 - Access method (NR)
$3 - Materials specified (NR)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

22. | 24 | Open Access and License Representation in MARC 21 | Springer Nature MAB Meeting, London, March 22nd, 201722
http://experimental.worldcat.org/marcusage/856.html

23. MARC 21 Field 912
Designation of National Licenses and
Digital Collections
First Indicator
Undefined
Second Indicator
Undefined
Subfield Codes
$a - Designation of national licenses and digital collections
(product identifier using ISILs) (NR)
$b - Year of license (NR)
| 24 | Open Access and License Representation in MARC 21 | Springer Nature MAB Meeting, London, March 22nd, 201723
http://www.dnb.de/SharedDocs/Downloads/DE/DNB/standardisierung/antragMarc212008.pdf
http://www.dnb.de/SharedDocs/Downloads/DE/DNB/standardisierung/marcAend201101Lizenzjahr.pdf

24. ? ? ?
– Do you use these fields?
– Which of these fields do you use
for licensing information?
– Do you prefer using 506, or 540, or both?
– Would some of these fields need changes
or additions to be usable? Which ones?
– Have we forgotten a MARC 21 format
element in our analysis here?
| 24 | Open Access and License Representation in MARC 21 | Springer Nature MAB Meeting, London, March 22nd, 201724