Information:
This field provides the information a library
user needs to locate an electronic resource.
Use the 856 tag when cataloging an electronic
service subscribed to by the library or the
school or when describing a remote file that
may be useful to the searcher. The 856 tag can
also direct library users to electronic
resources related to the item described in the
record.
Anglo-American Cataloging Rules (AACR2,
rule 9.7B1(c)) require that the mode of access
for a remote electronic resource be specified.
Guidelines for the Use of Field 856 prepared by
the Network Development and MARC Standards
Office is available at:
http://lcweb.loc.gov/marc/856guide.html
The large number of subfields defined in the 856
tag make the tag seem more complicated than it
really is. Each form of remote access requires
only a few of the subfields.
A Uniform Resource Identifer (URI) provides the
electronic access data in a standardized syntax.
When a URI is available for the item, enter
only subfield u. Add a subfield 2 if first
indicators 0, 1, 2, 3, or 4 do not apply and
use a first indicator of 7. The World Wide Web
(WWW) uses Hypertext Transfer Protocol (HTTP).
Use first indicator 4 and subfield u for the
URI. See examples 1 and 2.
At times the library user needs to use an
e-mail address to request an electronic
resource or subscribe to an electronic journal
or a list. Use a first indicator 0, subfield a
for the network address of the host computer,
and subfield h for the processor of the request
(the part of the e-mail address that preceded
@). See examples 3, 4, and 5. Use subfield f
to give the electronic name of a file available
through e-mail. When necessary, add subfield b
for the numeric Internet Protocol (IP). Use
subfield i for instructions to include in the
e-mail message, and subfield s for the file
size. See example 6.
Dial-up access allows individuals to connect to
a remote computer through a telephone number.
Enter dial-up connections using first indicator
3, subfield a for the host computer's domain,
and subfield b for the telephone number and
extension. See example 4. When needed, add
subfields k and l for the password and login
name and subfield o for the operating system
of the host. Add subfield p for the number or
name that identifies a process or service on
the host computer. Use subfield t for
the required terminal emulation. See example 5.
File Transfer Protocol (FTP) allows the
searcher to transfer a file from a remote
computer to his or her own computer. Use first
indicator 1, subfield a for the host computer's
domain, subfield d for the path to the logical
directory of the file. See example 7. Use
subfield f for the name of the file. Repeat
subfield f for the individual file names when
the item spreads over a series of separate
files. See example 8. When needed, add subfield
b for the numeric Internet Protocol (IP). Add
subfield c for the specific program needed
to decompress the file. Use subfield i when
the command is required to process a request,
and subfields k and l for any required password
or login name. Use subfield o for the operating
system of the host and subfield p for the
number or name that identifies a process or
service on the host computer. Add subfield q
for a specific file transfer mode or the
electronic format type. Add subfield s for
the file size. See example 8.
Remote login or Telenet allows the library user
to turn his or her personal computer into a
terminal connected to the host computer. Enter
Telenet information using first indicator 2 and
subfield a for the host computer's domain. See
example 9. When necessary, add subfield b for
the numeric Internet Protocol (IP), and
subfields k and l for the password and login
name. Use subfield o for the operating system
of the host, subfield p for the number or name
that identifies a process or service on the host
computer, and subfield t for the required
terminal emulation. Use subfield r for modem
settings including parity, number of bits per
character, and stop characters. Use subfield v
to enter hours of availability. See example 10.
In addition there are some free text subfields
for other useful information. Subfield m
contains the name of a contact person at the
remote site. Subfield n contains the name of
the institution, city, state, and/or country
of the host. Subfield x contains a note not
displayed on the OPAC. Subfield y contains
link text which is used for display in place
of the URL in subfield u. Subfield z
contains the text of a note relating to the
electronic location of the source identified
in the 856 field. It should be written to
display in the OPAC. See examples 1, 5, 11,
and 13.
For other access methods use 7 as the first
indicator and include the code for the method
of access in subfield 2. Use gopher for
Gopher protocol, news for USENET news, nntp
for USENET news using NNTP access, wais for
Wide Area Information Servers, file for
Host-specific file names, and prospero for
Prospero Directory Service. See example 11.
Indicators
First Access method
blank No information provided
0 E-mail
1 FTP
2 Remote login (Telnet)
3 Dial-up
4 HTTP
7 Method specified in subfield 2
Second Relationship
blank No information provided
0 Electronic location of resource
1 Electronic location of online version
of resource
2 Related electronic resource
8 No display constant generated
Subfields
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 in subfield
a (NR)
o Operating system (NR)
p Port (NR)
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)
x Nonpublic note (R)
y Link text (R)
z Public note (R)
2 Access method (NR)
3 Materials specified (NR)
Punctuation
This field does not end with a mark of
punctuation unless there is an abbreviation,
an initial, or other data that ends with
a mark of punctuation.
Examples:
Please read this note about the way MARC records
are displayed on our web site.
1. A book with references to electronic
forms and related files
245 10 _aMoby Dick, or, The whale /
_cHerman Melville ; illustrated by
Rockwell Kent.
856 41 _uhttp://etext.lib.virginia.edu/
etcbin/browsemixed?idMel2Mob&tag
=public&images
_mJeffrey Tiggs
_zElectronic text of Moby Dick, or,
The whale
856 41 _uhttp://www.geocities.com/Athens/
Acropolis/8816/Moby.cfm
_yQuotations from Moby Dick
856 42 _3portrait and information on author
_uhttp://www.melville.org/melville.
htm
_yLife and works of Herman Melville
856 42 _uhttp://www.kwm.org/
_yKindall Whaling Museum Online
856 42 _uhttp://www.whalesci.org/
_yThe Institute of Cetacean
Research homepage
2. A document available on the Web
245 10 _aCalifornia Condor Restoration
_h[electronic resource].
856 40 _uhttp://www.peregrinefund.org/
CACondor.cfm
3. A mailing list with subscription
instructions *
245 00 _aBlues music list
_h[electronic resource.
856 0 _abrownvm.brown.edu
_hListserv
_isubscribe blues-l
4. A dial up service *
245 00 _aCooperative Library Agency for
Systems and Services
_h[electronic resource].
856 30 _aclass.org
_b1-800-4884559
856 0 _aclass.org
_hclass
5. A dial up service *
245 00 _aUniversity of Alaska Southeast,
tundra service
_h[electronic resource].
856 30 _aalaska.edu
_b1-907-7891314
_kuser59
_llibrary296
_oUNIX
_p2000
_tVT102
_xrenewal cost $201/year
856 0 _aacad1.alaska.edu
_hJNJMB
6. An electronic resource that is available
through e-mail *
245 00 _aBitnode filelist
_h[electronic resource].
856 00 _abitnic.bitnet
_b192.153.156.15
_fbitnode filelist
_hlistserv
_iget bitnode filelist
_s23987 bytes
7. The source for files are available by ftp *
245 00 _aSupreme Court rulings
_h[electronic resource].
856 10 _aftp.cwru.edu
_d/hermes
8. Multiple files available through ftp *
245 00 _aConway's 'Life' simulations
_h[electronic resource].
856 10 _artfm.mit.edu
_b297.534.345.87
_cpkzip
_dpub/msdos/simulatn/
_falife01.zip
_falife02.zip
_falife03.zip
_falife04.zip
_falife05.zip
_falife06.zip
_falife07.zip
_falife08.zip
_falife09.zip
_imget alife**.zip
_kguest
_lanonymous
_oUNIX
_p6000
_qKermit
_s4166111 bytes
9. A remote login *
245 00 _aHam call signs
_h[electronic resource]
856 20 _ans.risc.net
_lhamradio
10. A remote login *
245 00 _aElectronic periodic table of the
elements
_h[electronic resource].
856 20 _acs.unt.edu
_b121.199.259.81
_kguest
_lanonymous
_oUNIX
_p2034
_rE-7-1
_t3270
_v24 hours
11. A newsgroup *
245 00 _aScience Fiction Forum online
_h[electronic resource].
856 70 _aalt.sf4m
_nState University of New York at
Stony Brook, Stony Brook, New York
_2news
12. Example with a URL and a URN
245 10 _aKey concepts in the architecture
of the digital library
_h[electronic resource] /
_cWilliam Y. Arms.
856 40 _uhttp://www.cnri.reston.va.us/home/
dlib/July95/h07arms.cfm
13. File on a local network giving path to
file *
245 00 _aWinZip
_h[electronic resource].
856 40 _dk:/winzip/windows
_fwinzip.lnk
_zShareware that can be used free
for 21 days
14. The same file with a URL for use
with Web Collection Plus or other
Internet OPACs. Begin subfield u
with http://\\. Using Uniform
Naming Convention (UNC) paths,
enter the name of the server
(lib_ser in this case), and
the name of the shared drive (in
this case drive_k). Next enter the
path followed by the file name.
245 00 _aWinZip
_h[electronic resource.
856 40 _uhttp://\\lib_ser/drive_k/winzip/
windows/winzip.lnk
_zShareware that can be used free
for 21 days
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