Information required to locate an electronic item. The information identifies the electronic location containing the item or from which it is available. It also contains information to retrieve the item by the access method identified in the first indicator position. The information contained in this field is sufficient to allow for the electronic transfer of a file, subscription to an electronic journal, or logon to a library catalog.
In MARC 21 classification records, this field may be used to link an electronic resource intended to supplement the classification scheme, such as an image of a map in a table related to the classification of geographic names.
Field 856 is repeated when the location elements vary (the URL in subfields $a and $c, when used). It is also repeated when more than one access method is used, mirror sites are recorded, different formats/resolutions with different URLs are indicated, and related items are recorded.
See the Guidelines for the Use of Field 856 for a more thorough discussion on the use of field 856.
856 | 7#$uhttp://minaret.loc.gov/images/gschedule/G1350a.gif$yMap of West south central states |