This might be a bizarre question, but can anyone point to some analysis for a large general library, consortium, or even like WorldCat, a distribution of materials by class? So say for example 10% of the collection is in the 700s, and half of that is in the 741s, a quarter is in 746.432... This table: Table 4: Subject breakdown, nonfiction print books History and auxiliary sciences 8 percent Engineering and technology 7 percent Business and economics 7 percent Language, linguistics, and literature 6 percent Philosophy and religion 5 percent Health and medicine 5 percent Art and architecture 3 percent Law 3 percent Sociology 3 percent Education 3 percent Other 15 percent Unknown 35 percent From http://www.dlib.org/dlib/november09/lavoie/11lavoie.html isn't really granular enough. Thanks! ------ Christina K. Pikas Librarian The Johns Hopkins University Applied Physics Laboratory Baltimore: 443.778.4812 D.C.: 240.228.4812 [log in to unmask]