Page 235 - DLIS006_INFORMATION SOURCES AND SERVICES

Information Sources and Services

Notes Most of the periodicals of reference value usually have their own indexes. Cumulated
indexes, for example, ten-year or five-year cumulations are also available in many cases.

Did u know? Presently, computerized indexes on microfiche or electronic media are also
available.
Bibliographic Reviews: Bibliographic reviews perform a combined function of providing
information and judgments about the items reviewed and therefore, serve as useful
bibliographic contributions made to a particular subject field. These can be in the form of
current advances, annual reviews or state-of-the-art on a subject area.

Example: A good example for this is Annual Review of Information Science and
Technology, 1966.
12.3.2 National Bibliographies

The national bibliographies are serial publications, which are current, and attempt to list the
publications of a particular country. They can be used to find current and retrospective information.
A national bibliography can be defined as a list of books, documents, pamphlets, serials, theses,
dissertations, or other printed material produced in a country, in the language of the country, by
the people living in the country or elsewhere within a stipulated time limit.

As national bibliographies record the intellectual input of nations, these are an authoritative
source for informing about the documents produced in a country. According to Dr. Ranganathan,
they serve cultural, economic, and social purposes.
The national bibliographies have several uses which include aiding libraries booksellers,
publishers and users too, to select and by the recent books. They are useful aid for bibliographical
control of documents of a nation and act as guides to the book trade. As already mentioned, the
national bibliographies may be current and retrospective.

Example: Following are the examples of National Bibliographies:
Indian National Bibliography (INB). Calcutta: Central Reference Library,
1957–Monthly.
British National Bibliography. London: British Library Bibliographic Services
Division, 1950–Weekly.

National bibliographies produced by different countries are also useful for knowing and selecting
latest books in the country.

Example: British National Bibliography is useful for knowing latest publications
published in U.K.
12.3.3 Trade Bibliographies

A trade bibliography is a list of books and other materials, which are printed and available in a
country for sale, through publishers, booksellers, or trade agencies. Their main function is to
promote book trade. They serve commercial purposes and thereby help in boosting sales.

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