Page 269 - DLIS006_INFORMATION SOURCES AND SERVICES

Information Sources and Services

Notes The scope, presentation and various types of I&A sources have also been comprehensively
covered in this Unit.

13.9 Keywords

Abstract: Abstract is an abbreviated, accurate representation of the contents of a document,
preferably prepared by its author for publication with it.
Abstracting Periodical: An abstracting periodical gives the information content of the primary
documents in a condensed form.
Citation Indexes: They follow a novel method of detecting subject relationship of documents
through citations, and are claimed to be a useful tool for subject retrieval.

Cooperate Index: The 'Cooperate Index' is arranged under the name of the organizations.
It provides citation for all items attributed to the organization and published during the period
indexed.
Index: In general, Index usually refers to a system used to make finding information easier.
Indexing Periodical: An indexing periodical is an access tool to a systematically arranged list of
periodical literature providing complete bibliographical references of already published
individual items of primary documents, which are published at regular intervals.

Permuterm Subject Index: It indexes the articles by subject mainly the significant key world in
the title.
Secondary Source: A secondary source is a document or recording that relates or discusses
information originally presented elsewhere.

13.10 Review Questions

1. What is indexing and abstracting?
2. “An Index can be alphabetical, classified, chronological, geographical or numerical”.
Discuss.
3. Clearly bring out need and features of Indexing and Abstracting Sources.
4. Elaborate the functions of indexing and abstracting periodicals.

5. What are the purpose of I & A periodicals?
6. What is the importance of indexing and abstracting periodicals?
7. Discuss the presentation of indexing and abstracting periodicals.
8. Write down the various types of indexing and abstracting periodicals.
9. Briefly explain the uses of indexing and abstracting periodicals.

10. “I & A periodicals may be exhaustive or selective in coverage of literature depending
upon the purpose”. Comment.

Answers: Self Assessment

1. Secondary 2. Indexing

3. Abstracting 4. Bibliographical

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