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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

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ERIC Number: EJ121793
Record Type: CIJE
Publication Date: 1975
Pages: N/A
Abstractor: N/A
Reference Count: 0
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A Guide for Developers and Users of Observation Systems and Manuals
Herbert, John; Attridge, Carol
American Educational Research Journal, 12, 1, 1-20, Win 75
A set of criteria was developed to assist users and developers of observation systems. Thirty-three criteria which observation systems should meet were identified and classified into three main types: identifying, validity, and practicality. (Author/DEP)
Publication Type: N/A
Education Level: N/A
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