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El concepto de número / César A. Trejo

by Trejo, César A.

Edition: Tercera ediciónMaterial type: Text Text; Format: print ; Literary form: Not fiction Publisher: Washington : Secretaría General de la Organización de los Estados Americanos, 1978Availability: Items available for loan: Biblioteca Central UNIBE [Call number: 513.23 T786c 1978] (1).
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Enseñanza de la matemática moderna en el segundo curso / César A. Trejo, Jorge E. Bosch

by Trejo, César A | Bosch, Jorge E.

Material type: Text Text; Format: print ; Literary form: Not fiction Publisher: Buenos Aires : Eudeba, 1969Availability: Items available for loan: Biblioteca Central UNIBE [Call number: 511 T787e] (1).
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Matemática general/ César A. Trejo

by Trejo, César A.

Edition: Segunda ediciónMaterial type: Text Text; Format: print ; Literary form: Not fiction Publisher: Buenos Aires : Kapelusz, 1966Availability: Items available for loan: Biblioteca Central UNIBE [Call number: 512.1 T787m 1966] (1).
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Matemática general / César A. Trejo

by Trejo, César A.

Edition: Segunda ediciónMaterial type: Text Text; Format: print Publisher: Buenos Aires : Kapelusz, 1965Availability: Items available for loan: Biblioteca Central UNIBE [Call number: 512.1 T787m 1965] (1).