Where are valid MARC fields that I can use (when creating a mapping table)?
[A] A good introduction to MARC records (and the field and subfield codes they may contain) is at http://lcweb.loc.gov/marc/umb/. If you don’t have the patience for that, and just want to see what you can do with the catalog system, see Using the Catalog System. If you’re just looking for other valid codes (e.g., “I’m tired of importing [245a]!” ;), then one source for USMARC Bibliographic codes is at http://lcweb.loc.gov/marc/bibliographic/ecbdhome.html.
