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Use the bath.isbn index instead of unadorned isbn. Thus: http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&query=bath.isbn=9781449313944 Or to actually see the record: http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&query=bath.isbn=9781449313944&maximumRecords=1 -- Mike. On 8 August 2014 21:03, Rick Aurbach <[log in to unmask]> wrote: > I am an utter newbie to SRU and would be very grateful for your help. > > I am trying to implement an application in which the user > (a) first scans an ISBN from a book, then > (b) does a lookup via SRU to get information from the Library of > Congress (and thereby avoid manual entry). > > I am using (for example) > http://z3950.loc.gov > :7090/voyager?version=1.1&operation=searchRetrieve&query=isbn=9781449313944 > > and I am getting back: > numberOfRecords: 0 > diagnostic: message: Unsupported index > detail: isbn > > However, if I get the Explain record, it says > <index id=“7”> > <title>isbn</title> > <map><name set=“bath”>isbn</name></map> > </index> > > So I would have thought that what I attempted to do was legal. > > [1] What am I missing here? > [2] How can I do an ISBN lookup? > > Thank you for your help. > > Cheers, > > Rick Aurbach > Aurbach & Associates, Inc. > >