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- catalog contributor b4740792.
- catalog contributor b4740793.
- catalog created "1965".
- catalog date "1965".
- catalog dateCopyrighted "1965".
- catalog description "Includes bibliography.".
- catalog extent "25, [9] ℓ.".
- catalog issued "1965".
- catalog language "eng".
- catalog publisher "Palo Alto, Calif., American Institute for Research".
- catalog subject "Anxiety.".
- catalog subject "Programmed instruction.".
- catalog title "Level of anxiety and presence or absence of feedback in programmed instruction; final report.".
- catalog type "text".