JCDL - NSDL Core services in the architecture of the national science digital library (NSDL) Carl Lagoze William Y. Arms Stoney Gan Diane Hillmann Christopher Ingram Dean B. Krafft Richard J. Marisa Jon Phipps John Saylor Carol Terrizzi Walter Hoehn David Millman James Allan Sergio Guzman-Lara Tom Kalt Creating virtual collections in digital libraries: benefits and implementation issues Gary Geisler Sarah Giersch David McArthur Marilyn McClelland Ontology services for curriculum development in NSDL Amarnath Gupta Bertram Ludäscher Reagan Moore Interactive digital library resource information system: a web portal for digital library education Ahmad Rafee Che Kassim Thomas R. Kochtanek Return to JCDL session listing DiSC'03 © 2003 Association for Computing Machinery