UNIT – III (LIS)

• 1. Information Sources - Nature, Characteristics, Types and Formats. 
• 2. Sources of Information - Primary, Secondary and Tertiary; Documentary and Non-Documentary. 
• 3. Primary Information Sources (Print and Electronic) - Journals, Conference Proceedings, Patents, Standards, Theses & Dissertations, Trade Literature. 
• 4. Secondary Information Sources (Print and Electronic) - Dictionaries, Encyclopedias, Bibliographies, Indexing & Abstracting, Statistical sources, Handbooks and Manuals. 
• 5. Tertiary Information Sources (Print and Electronic)- Directories, Year Books, Almanacs. 
• 6. Reference Sources - Bibliographical, Biographical, Educational, Language and Geographical. 
• 7. Electronic Information Resources - Subject Gateways, Web Portals, Bulletin Boards, Discussion Forums /Groups. 
• 8. Databases: Bibliographic, Numeric, Full text, Multimedia; Open Access Databases. 
• 9. Institutional and Human Resources. 
• 10. Evaluation of Reference Sources and Web Resources.