mods The Object Description Schema (MODS) is an XML-based bibliographic description schema developed by the United States Library of Congress' Network Development and Standards Office. MODS was designed as a compromise between the complexity of the MARC format used by libraries and the extreme simplicity of Dublin Core metadata. (Excerpt from Wikipedia article: Metadata Object Description Schema (MODS)) 15 23 0.9 4.3 1 4.3 http://www.ariadne.ac.uk/sites/all/datacharts/hc/5569-chart-wp.html