A bibliographic index is a bibliography intended to help find a publication. Citations are usually listed by author and subject in separate sections, or in a single alphabetical sequence under a system of authorized headings collectively known as controlled vocabulary, developed over time by the indexing service.[1] Indexes of this kind are issued in print periodical form (issued in monthly or quarterly paperback supplements, cumulated annually), online, or both. Since the 1970s, they are typically generated as output from bibliographic databases (whereas earlier they were manually compiled using index cards).
"From many points of view an index is synonymous with a catalogue, the principles of analysis used being identical, but whereas an index entry merely locates a subject, a catalogue entry includes descriptive specification of a document concerned with the subject".[2]
The index may help search the literature of, for example, an academic field or discipline (example: Philosopher's Index), to works of a specific literary form (Biography Index) or published in a specific format (Newspaper Abstracts), or to the analyzed contents of a serial publication (New York Times Index).
See also
[edit]- Citation index
- Guide to information sources
- Indexing and abstracting service
- Library catalog
- List of academic databases and search engines
- Metabibliography
- Metadata registry
- Subject index
References
[edit]| Authority control databases: National |
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Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction