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why US failed to flush out Taliban from Afghanistan
Standard Number and Terms of Availability Area International Standard Book Number (ISBN) and International Standard Serial Number (ISSN) are numbers given to each individual
Meaning A vocabulary control device depends on a master list of terms that can be assigned to documents. Such a master list of terms is called 'List of Subject Headings'. A l
Special Features Most ready reference sources are of specific frequency i.e. annual, biennial, or published at specific or irregular interval. They are referred to answer fac
Main Entry and Added Entries Of the several entries we provide for a document in library catalogue, one entry is called the 'Main Entry' and the remaining are known as 'Added
General Encyclopaedia - English Language The common uses of the non-English western language encyclopaedias can be summarised as under: The collection of foreign languag
KEY WORD INDEXING MODELS Computers began to be used to aid information retrieval system in the 1950s. The first use of computers in information retrieval was the production
Commercial Cataloguing When centralised processing like preparation and sale of catalogue entries on-cards is undertaken by an agency as commerical proposition we may call it
Objectives The objectives of centralised cataloguing are to: avoid duplication of work; achieve uniform and standard cataloguing practices; minimize the cost of
Patents and Standards These two types of sources of information mostly belong to the literature of Science and Technology- Patent specifications are referred to as patents. A
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