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One common question is where to get sample marc MARC records for testing or playing around with. If you work at a library, chances are good that you can get some records out of your ILS (go ask your systems librarian if you don't know how to do this yourself). If you don't work in a library, you can get marc MARC bibliographic records from the internet archive Internet Archive at [http://www.archive.org/details/marcrecords http://www.archive.org/details/marcrecords].

There is a nascent movement within the code4lib community to establish a test set of problematic marc MARC records, especially records that are representative of the kinds of weirdness that is encountered in real libraries. It is hoped that this could eventually become a test corpus against which to run various marc MARC processing implementations. For more information, watch [http://www.archive.org/details/MARCTHULU Simon Spero's excellent talk from Code4LibCon 2010].