Is there a plug-in which uses Z39.50 to connect to the (US) Library of Congress database to pull information, or can the program import MARC bibliographic information?
I ask because I long ago did some work for school libraries with MARC records, and I learned of the free program MarcEdit http://oregonstate.edu/~reeset/marcedit/html/index.php which can search for the bibliographic record from the Library of Congress, which has, as you'd imagine, fairly complete information.
Information on the protocol can be found starting here: http://www.loc.gov/z3950/agency/