Secondary publications

*	The user community
*	Authorship
*	Primary publicaiton
*	Primary distribution
*	Acquisition by information centers
*	Organization & Control
*	Secondary publication
*	Secondary distribution
*	Acquisition by users

Information Services

Types of Information Need

Information Retrieval Systems

*	Input
*	Organization & Control
*	Output

Information Path

Matching Information Needs Against Messages

Secondary publications
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Secondary publications include bibliographies, abstract and indices related to the report. They may be distributed directly to the user community or to institutional subscribers such as other information centers.

Secondary distribution

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