Marc::crosswalk::dublincore provides an implentation of the loc's spec on how to convert metadata between marc and dublin core format. the spec for converting marc to dublin core is available at: http://www.loc.gov/marc/marc2dc.html, and from dc to marc: http://www.loc.gov/marc/dccross.html.

nb: the conversion cannot be done in a round-trip manner. i.e. doing a conversion from marc to dc, then trying to go back to marc will not yield the original record.