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- catalog contributor b4551252.
- catalog created "1972.".
- catalog date "1972".
- catalog date "1972.".
- catalog dateCopyrighted "1972.".
- catalog extent "66 p.".
- catalog issued "1972".
- catalog issued "1972.".
- catalog language "eng".
- catalog publisher "Paris, Organisation for Economic Co-operation and Development, Development Centre,".
- catalog subject "Educational planning Mathematical models.".
- catalog title "Present status and future developments of models for educational planning.".
- catalog type "text".