Children discover arithmetic an introduction to structural arithmetic.

Children discover arithmetic an introduction to structural arithmetic.

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Xehetasun bibliografikoak
Egile nagusia: Stern, Catherine 1894-1973 (Egilea)
Formatua: Liburua
Hizkuntza:English
Argitaratua: New York Harper 1949.
Gaiak:
Arithmetic > Study and teaching.