Well, from where Chris left off it would be fairly easy to check for a file in the directory with an "marc.xml" filename extension, then XSLT for:
<datafield tag="010" ind1=" " ind2=" "> <subfield code="a">39004822</subfield> </datafield> If such exists, and then you'll have the ISBN. To sweeten it further, send that into xISBN or ThingISBN and get other ISBNs for the same work. This seems completely scriptable to me. Perhaps someone at c4l will have it done before the conference is over. And Tim, the example above is one that's in your catalog. Roy -----Original Message----- From: Code for Libraries [mailto:[EMAIL PROTECTED] On Behalf Of Chris Freeland Sent: Monday, February 25, 2008 11:51 AM To: CODE4LIB@LISTSERV.ND.EDU Subject: Re: [CODE4LIB] oca api? Steve & Tim, I'm the tech director for the Biodiversity Heritage Library (BHL), which is a consortium of 10 natural history libraries who have partnered with Internet Archive (IA)/OCA for scanning our collections. We've just launched our revamped portal, complete with more than 7,500 books & 2.8 million pages scanned by IA & other digitization partners, at: http://www.biodiversitylibrary.org To build this portal we ingest metadata from IA. We found their OAI interface to pull scanned items inconsistently based on date of scanning, so we switched to using their custom query interface. Here's an example of a query we fire off: http://www.archive.org/services/search.php?query=collection:(biodiversit y)+AND+updatedate:%5b2007-10-31+TO+2007-11-30%5d+AND+-contributor:(MBLWH OI%20Library)&limit=10&submit=submit This is returning scanned items from the "biodiversity" collection, updated between 10/31/2007 - 11/30/2007, restricted to one of our contributing libraries (MBLWHOI Library), and limited to 10 results. The results are styled in the browser; view source to see the good stuff. We use this list to grab the identifiers we've yet to ingest. Some background: When a book is scanned through IA/OCA scanning, they create their own unique identifier (like "annalesacademiae21univ") and grab a MARC record from the contributing library's catalog. All of the scanned files, derivatives, and metadata files are stored on IA's clusters in a directory named with the identifier. Steve mentioned using their /details/ directive, then sniffing the page to get the cluster location and the files for downloading. An easier method is to use their /download/ directive, as in: http://www.archive.org/download/ID$, or in the example above: http://www.archive.org/download/annalesacademiae21univ That automatically does a lookup on the cluster, which means you don't have to scrape info off pages. You can also address any files within that directory, as in: http://www.archive.org/download/annalesacademiae21univ/annalesacademiae2 1univ_marc.xml The only way to get standard identifiers (ISBN, ISSN, OCLC, LCCN) for these scanned books is to grab them out of the MARC record. So the long-winded answer to your question, Tim, is no, there's no simple way to crossref what IA has scanned with your catalog - THAT I KNOW OF. Big caveat on that last part. Happy to help with any other questions I can, Chris Freeland -----Original Message----- From: Code for Libraries [mailto:[EMAIL PROTECTED] On Behalf Of Steve Toub Sent: Sunday, February 24, 2008 11:20 PM To: CODE4LIB@LISTSERV.ND.EDU Subject: Re: [CODE4LIB] oca api? --- Tim Shearer <[EMAIL PROTECTED]> wrote: > Hi Folks, > > I'm looking into tapping the texts in the Open Content Alliance. > > A few questions... > > As near as I can tell, they don't expose (perhaps even store?) any common > unique identifiers (oclc number, issn, isbn, loc number). I poked around in this world a few months ago in my previous job at California Digital Library, also an OCA partner. The unique key seems to be text string identifier (one that seems to be completely different from the text string identifier in Open Library). Apparently there was talk at the last partner meeting about moving to ISBNs: http://dilettantes.code4lib.org/2007/10/22/tales-from-the-open-content-a lliance/ To obtain identifiers in bulk, I think the recommended approach is the OAI-PMH interface, which seems more reliable in recent months: http://www.archive.org/services/oai.php?verb=Identify http://www.archive.org/services/oai.php?verb=ListIdentifiers&metadataPre fix=oai_dc&set=collection:cdl etc. Additional instructions if you want to grab the content files. >From any book's metadata page (e.g., http://www.archive.org/details/chemicallecturee00newtrich) click through on the "Usage Rights: See Terms" link; the rights are on a pane on the left-hand side. Once you know the identifier, you can grab the content files, using this syntax: http://www.archive.org/details/$ID Like so: http://www.archive.org/details/chemicallecturee00newtrich And then sniff the page to find the FTP link: ftp://ia340915.us.archive.org/2/items/chemicallecturee00newtrich But I think they prefer to use HTTP for these, not the FTP, so switch this to: http://ia340915.us.archive.org/2/items/chemicallecturee00newtrich Hope this helps! --SET > We're a contributer so I can use curl to grab our records via http (and > regexp my way to our local catalog identifiers, which they do > store/expose). > > I've played a bit with the z39.50 interface at indexdata > (http://www.indexdata.dk/opencontent/), but I'm not confident about the > content behind it. I get very limited results, for instance I can't find > any UNC records and we're fairly new to the game. > > Again, I'm looking for unique identifiers in what I can get back and it's > slim pickings. > > Anyone cracked this nut? Got any life lessons for me? > > Thanks! > Tim > > +++++++++++++++++++++++++++++++++++++++++++ > Tim Shearer > > Web Development Coordinator > The University Library > University of North Carolina at Chapel Hill [EMAIL PROTECTED] > 919-962-1288 > +++++++++++++++++++++++++++++++++++++++++++ >