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Concentration! [Recurso electrónico] : how to focus for success / Sam Horn.

Horn, Sam.
Material type: materialTypeLabelBook; Format: electronic available online remotePublisher: Los Altos, Calif. : Crisp Publications, c1991Description: iii, 92 p. : ill. ; 26 cm.Subject(s): Attention | Mental discipline | Success -- Psychological aspectsAdditional physical formats: No titleDDC classification: 153.1/532 Online resources: Texto completo Available also in a print edition.
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Electronic reproduction. Boston, MA : Safari, 1991. Available via World Wide Web.

Modo de acceso: World Wide Web.

Made available through: Safari Books Online, LLC.

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