HI All, I am getting data from google books that I do not understand in the dc:identifier field. I understand ISBN: ISSN: LCCN: OCLC: but UOM:, and UCSC:? Can anyone help with what these two mean. Are they Universities? Here is a snippet of xml; <dc:format>book</dc:format> <dc:identifier>r0xMAAAAMAAJ</dc:identifier> <dc:identifier>UOM:39015035700759</dc:identifier> <dc:subject>Medical</dc:subject> <dc:title>Abstracts [of the] annual meeting</dc:title> ... generated from this URL: http://www.google.com/books/feeds/volumes?q=Abstracts%20of%20the%20annual%20meeting Thanks, David. -- David Kane, MLIS. Systems Librarian Waterford Institute of Technology Ireland http://library.wit.ie/ T: ++353.51302838 M: ++353.876693212