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Information sources forms the basic stock for the services to be provided by libraries and information centres. Systematic organization of information sources and or their surrogates is essential for effective retrieval. The document surrogates along with author and title are also prepared and arranged under the name of the subject. Terms (vocabularies) are used to represent the subject name in the surrogate entries. To represent subjects, objectively ...
Information explosion is one of the impacts of invention of printing technology and the emergence of democratic governments. The ever-accelerating growth of literature has put forth the need for bibliographic control. Since 1960s information retrieval (IR) and its auxiliary aspects have been of interest of the LIS professionals. As a result a large number of documents have been published on IR and its various aspects. The sheer number (of documents) itself is an ...