📁 参考
Reference is a category for sites devoted to the study of and access to information itself - teaching it (Education), using it (Knowledge Management), storing it (Libraries, Museums) - or sites containing information on topics varied and comprehensive enough that they could not be classified under the other top level Open Directory categories (Dictionaries, Directories, Encyclopedias).
子分类
条目 (20+)
Catholic Online: St. Clare of Montefalco
http://www.catholic.org/saints/saint.php?saint_id=607
Catholic Encyclopedia: St. Clare of Montefalco
http://www.newadvent.org/cathen/04006a.htm
Current experiments in particle physics
http://www.slac.stanford.edu/spires/experiments/online_exp.shtml