« New video cataloging procedure available | Main | What are DVD-Audio discs and SACDs? »
November 29, 2004
13 digit ISBNs
The standard for ISBNs is being extended to 13 digits to enlarge the pool of available ISBN numbers and make them more consistent with other 13-digit commercial numbers such as UPC codes and EAN codes. The change does not become mandatory until January of 2007, but a number of publishers have begun issuing materials which bear a 13-digit ISBN, usually in addition to a 10-digit ISBN. The 13-digit numbers begin with the prefix "978," which implicitly is the prefix for the range that includes all existing ISBNs. Once that range is used up, the prefix "979" will come into use. After that point, 10-digit ISBNs will no longer be unique in principle. The final check digit (a number calculated from the preceding numbers to provide a check on accurate data entry) for 13-digit ISBNs will be based on the 12 rather than the 9 preceding digits, so the two ISBNs for the same item will usually differ in both the presence of the 3-digit prefix and in their final check digits.
In addition to publishers, vendors, and retailers, Library of Congress, OCLC, library system developers, and others are all working to accommodate this change. OCLC and LC have decided to record 13-digit ISBNs provisionally in the 024 field (Other Standard Number) with first indicator 3. Aleph in version 14 and 16 will let us record a 13-digit ISBN in the 020 field (ISBN), though it is not able to verify a 13-digit ISBN and will pop up an error message. After consulation with LEO, the guidelines for dealing with 13-digit ISBNs in MNCAT are:
Leave 13-digit ISBNs in 024 3_ fields on incoming records.
Locally enter 13-digit ISBNs in the 020 field in MNCAT.
In version 16, both the 024 3_ field and the 020 fields will be indexed in the ISBN search index, so they should be accessible with a single search. In version 14, two searches may be needed to find a 13-digit ISBN:
Searching in the Web OPAC
The 024 ISBN numbers must be searched using the "024=" index in Command search. Do not use the ISMN menu choice in the Advanced search to search for ISBNs in 024. The ISMN search listed in Advanced search menus is tied to the "WMN=" index, which includes only true ISMN numbers (024 first indicator 2) and not the 13-digit ISBN numbers. The ISBN Advanced menu choice can be used for 13-digit ISBNs entered in 020 fields. When using an Advanced or Command search for standard numbers always end the search term with a truncation symbol ("?") to ensure that any additional characters in the field (e.g., "(pbk.)") do not cause problems.
Searching in Staff Mode
13-digit ISBNs in 024 fields can be searched using the "Other St Identifiers (024)" search on the Browse or Find search menus, both of which use the "024=" index. Numbers entered in 020 fields can be searched using the ISBN Browse or Find search. When using the Find search for standard numbers always end the search term with a truncation symbol ("?") to ensure that any additional characters in the field (e.g., "(pbk.)") do not cause problems.
If you have questions about how to apply this guideline, please contact Stephen.
Posted by trail001 at November 29, 2004 8:44 AM | General
Comments
Here some linkz,
[url=][/url]
Posted by: louise at July 12, 2007 11:20 AM
Here some linkz,
[url=][/url]
Posted by: louise at July 12, 2007 11:20 AM
Don`t run away of this shit!
http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra
biagra [url=http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra]biagra[/url]
Posted by: biagra at July 29, 2007 3:21 AM
Don`t run away of this shit!
http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra
biagra [url=http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra]biagra[/url]
Posted by: biagra at July 29, 2007 3:22 AM
Don`t run away of this shit!
http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra
biagra [url=http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra]biagra[/url]
Posted by: biagra at July 29, 2007 3:22 AM
You need it.
http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra
biagra [url=http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra]biagra[/url]
Posted by: biagra at August 2, 2007 3:31 AM
You need it.
http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra
biagra [url=http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra]biagra[/url]
Posted by: biagra at August 2, 2007 3:31 AM
You need it.
http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra
biagra [url=http://www.washingtonpost.com/ac2/wp-dyn/admin/search/google?keywords=site%3Aforumlivre.com%20biagra]biagra[/url]
Posted by: biagra at August 2, 2007 3:31 AM