I was wondering if anyone knows of a good BISAC Subject Headings source for looking up a recommended BISAC based on ISBN, LCSH, etc. I've found some pages on oclc.org saying they were starting work on crosswalks and possibly including them in WorldCat but I haven't seen any returned in any WorldCat api calls yet. I've also read that ONIX records often have a BISAC code, is there a good source that might cover many publishers? http://www.bisg.org/standards/bisac_subject/index.html http://www.oclc.org/dewey/updates/numbers/ eby