1. Taxonomic rank
   Resource Type: Article
   In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in a taxonomic hierarchy. Examples of taxonomic ranks are species, genus, family, order, class, phylum, kingdom, domain, etc.
2. Will Google's Keyword Searching Eliminate the Need for LC Cataloging and Classification?
   Resource Type: Article
   Published: 2005
   Google Print does not "change everything" regarding the need for professional cataloging and classification of books; its limitations make cataloging and classification even more important to researchers. Google’s keyword search mechanism, backed by the display of results in "relevance ranked" order, is expressly designed and optimized for quick information seeking rather than scholarship.

Experts on Classification in the Sources Directory

1. Natural History Museum