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- 78291092 contributor B3326478.
- 78291092 created "1970.".
- 78291092 date "1970".
- 78291092 date "1970.".
- 78291092 dateCopyrighted "1970.".
- 78291092 extent "209 p.".
- 78291092 issued "1970".
- 78291092 issued "1970.".
- 78291092 language "spa".
- 78291092 publisher "Quito, Edit. Casa de la Cultura Ecuatoriana,".
- 78291092 subject "513/.071".
- 78291092 subject "Arithmetic Study and teaching.".
- 78291092 subject "QA135.5 .C36".
- 78291092 title "Orientaciones didacticas: aritmética [por] Edmundo Carbo.".
- 78291092 type "text".