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Concentración psicológica / Ernst Ott ; tr. Vicente Gamarra.

by Ott, Ernst.

Material type: Text Text; Literary form: Not fiction Publication details: Bilbao, Esp. : Mensajero, [1990?]Availability: Items available for loan: 1 . Collection(s): Colección General Call number: BF321 O8.2.

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Enseñe a pensar a su hijo : activación preescolar de la inteligencia / Ernst Ott.

by Ott, Ernst.

Material type: Text Text; Format: print ; Literary form: Not fiction Publication details: Bilbao (Esp.) : Mensajero, 1990Availability: Items available for loan: 5 . Collection(s): Colección General Call number: LB1062 O8.4.

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Súperese pensando : hacia un pensamiento lógico y eficaz / Ernst Ott ; tr. Isaac Bravo.

by Ott, Ernst.

Edition: 5a ed.Material type: Text Text; Literary form: Not fiction Publication details: Bilbao, Esp. : Mensajero, [199-?]Availability: Items available for loan: 1 . Collection(s): Colección General Call number: BF431 O8.78.

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