Information source

INFORMATION SOURCES सूचना स्त्रोत 
  • Information sources organized Content, Tpye , Media or Forms.
  • generally information sources divided 
  • (a) Documentary (b) Non Documentary 

Documentary Sources 
  • The sources which available in printed form.
  • All recorded sources of information.
  • Published or unpublished in print or electronic form.
  • Primary, secondary and tertiary sources called Documentary Sources. 

Denis Grogan based on information sources characteristics (type)
(a) Primary (b) secondary (c) tritiary 
 
Primary source of information 
  • it contains original material. 
  • It is first hand information. 
  • It represent new knowledge or new interpretation of old knowledge.
  • It is original and unfiltered.
  • Research scholar prepare primary source. 
  • Published, reported or recorded first time 
  • Not been interpreted, commented, translated 
  • not evaluated by second party. 
Example 
research paper, Manuscript , Thesis , Dissertation 
Conference paper, Patent, standard, Technical report 
Interview , letter, Minutes of Meeting memorandum,
Articles, Journal , Medical Records , Court Record Correspondence, speech , Diaries , Autobiography 

Secondary Source of Information 
  • The source which are compiled, modified, selected and reorganized.
  • The data originally collected by secondary person 
  • It present content of primary source in condence form or  list 
Example
Indexes, Bibliography, Indexing and Abstracting Periodicals, Current Awareness Service, States of Arts of Reports, Textbook, Critical Review, Monograph  Yearbooks , Handbook, Manual , Encyclopedia Literature Review , Directories, Commentries , Map and Atlas , Technical translation, Treaties, Textbook , Fact on file.

Tritiary sources of information 
  • It is based on primary and secondary source of information 
Bibliography of Bibliography,  Guide to reference Source , Guide to the literature , Directories of directories , union catalogue , the world list of social science periodical by UNESCO, The Europa world of learning


Non Documentary Sources 
The document are not in printed form 
NDS two categories 
(a) Formal (b) Informal

Formal sources of information 
It includes Research organisation, universities, govt. Department, Industries, Consultant 

Information sources of information 
Conversation with colleagues, visitors, friend 


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