Catalogimg is a subset of the larger field that is sometimes called bibliographic control or organization of information and it is helpful to view it in that context.Bibliographic control has been defined by Elaine Svenonius as the skill or art of organizing knowledgw information for retrievel.Anyone who has attempted to maintain a file of reference to articecles,books and other types of material containing information on a particular subject or perhapys by particular artist or author has practiced bibliographic control overa very small part of the universe of information knowledge.