Library Cartography
 By format of material
   Books
   Journals and magazines
   Online materials
   Reference
   Microform
 By subject
   Dewey Decimal 
     Fiction
     Non-fiction
   Library of Congress
     Academic disciplines 
 By location
   Physical presence in the library
   Physical presence at other libraries
   Online; requires subscription
   Online; available freely
 By search tool
   Library catalog
   Subscription databases
   Free web
 By ways to get help
   Librarians
   Online or print pathfinders