I tend to agree with approach of recording both years. We didn't create the conundrum.
I agree with Adam that there's a high probability that "Two, five, ten years from now, that book is going to be seen in the scholarly community as from 2014, not from 2013." (if cited at all, of course). But again, that's not an issue we created and likely not to be a stumper to future scholarship in the field if we record both dates. However, by recording the dates we do help catalogers handling the book/resource and adding it to their collections. Daniel -- Daniel CannCasciato Head of Cataloging Central Washington University Brooks Library Ellensburg, WA 98926 "Wearing the sensible shoes proudly since 1977!"