Ok, I wanting to database a small library.
I\'ve only had limited experience with databases, and none with querying from a webserver.
I\'m going to want to r
You can use the MARC21 XML from the Library of Congress.
I did the same thing as you, building a database to house my library. Scanning in the ISBN collects the data from this URL http://z3950.loc.gov:7090/voyager?version=1.1&operation=searchRetrieve&query=YOUR_ISBN&maximumRecords=1
The response data then fills in a form with all the data. You don't need an account, just that URL.
The response comes in XML (as mentioned), and you can parse from there using whatever language you want (my choice happens to be PHP).