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2007 MeSH/MARC
Download of any of the full data files requires the completion of an online memorandum of understanding.
Conversion Information
- Download NLM 1999 Conversion Specifications (pdf format). This is the most current version. Form, language, and geographic qualifiers (subheadings) have been removed from MeSH. Any reference to these three types of records should be ignored.
- The NLM Conversion Specifications are to be used in conjunction with another document, USMARC Specifications for Record Structure, Character Sets, and Exchange Media for sale by the Cataloging Distribution Service, Library of Congress.
MeSH/MARC files available to download
Note that for 2007 MeSH there are two MeSH/MARC change files. One file contains all the changes made after the first release of 2006 MeSH in October 2006 and is intended for users who have downloaded only that file. In December 2006 additional changes were made in 2006 MeSH data, primarily related to influenza and bird flu, and the full MeSH/MARC file was updated with these changes. To accommodate users who downloaded the second full file, a second change file was created which includes only the changes made after December.
The data are encoded in MARC-8. These files can only be transferred via FTP into a save file. A file extension of .bin has been used to prompt the local receiving computer to automatically open a file to save the data.
For users of Internet Explorer, if you want to save a file to your local hard drive rather than open it, you must right-click the link and then select Save Target As....
The full file is estimated to take 5 minutes to download on a T3 communications line (at 45 Mbps) and longer on slower lines.
- Sample file contains 5 descriptor records, 83 qualifier records, and 138 descriptor/qualifier combinations, for a total of 226 records. Download sample file [123KB]
- Label file provides size and other statistics for the sample file. [72B]
- Label file provides size and other statistics for the sample file. [72B]
- Update-only files (Two files for 2007 MeSH)
- Update-only file 1. Designed for users who downloaded only the first 2006 full file and so contains all changes since the first full 2006 file was released in October 2006 (including Bird Flu). Contains new, modified, and deleted records, with 3,177 descriptor records, 33 qualifier records, and 15,660 descriptor/qualifier combinations, for a total of 18,870 records. Download update-only file [7MB]
- Label file provides size and other statistics for the update file. [84B]
- Label file provides size and other statistics for the update file. [84B]
- Update-only file 2. Designed for users who downloaded the full file updated in December and so contains only changes made since that time (and so does not include Bird Flu). Contains new, modified, and deleted records, with 3,149 descriptor records, 33 qualifier records, and 15,444 descriptor/qualifier combinations, for a total of 18,626 records. Download update-only file [7MB]
- Label file provides size and other statistics for the update file. [84B]
- Label file provides size and other statistics for the update file. [84B]
- Update-only file 1. Designed for users who downloaded only the first 2006 full file and so contains all changes since the first full 2006 file was released in October 2006 (including Bird Flu). Contains new, modified, and deleted records, with 3,177 descriptor records, 33 qualifier records, and 15,660 descriptor/qualifier combinations, for a total of 18,870 records. Download update-only file [7MB]
- Full file contains all terms with 24,357 descriptor records, 83 qualifier records, and 546,923 descriptor/qualifier combinations, for a total of 571,363 records. Download full file [140MB]
- Label file provides size and other statistics for the full file. [84B]
| File | Total Records | File Size | Bytes |
|---|---|---|---|
| Full File | 571,363 | 140MB | 146,636,880 |
| Update-only file1* | 18,870 | 7MB | 6,939,932 |
| Update-only file2* | 18,626 | 7MB | 6,857,543 |
| Sample File | 226 | 123KB | 125,520 |
* Update-only File 1 is for users who downloaded first full 2006 file in October. (Includes the bird flu changes.) Update-only File 2 is for users who downloaded the updated full file in December 2006, so includes only the changes made after the bird flu changes.
- If you have questions concerning the content of MeSH/MARC files or FTP of MeSH/MARC data, please contact:
- Jacque-Lynne Schulman
- Medical Subject Headings
- Telephone: 301-594-2091; FAX: 301-402-2002
- email: schulman@nlm.nih.gov
Last reviewed: 31 January 2007
Last updated: 31 January 2007
First published: 13 November 2006
Metadata| Permanence level: Permanent: Dynamic Content