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Los determinantes del rendimiento escolar : reseña de la investigación para los países en desarrollo / Ernesto Schiefelbein, John Simmons.

by Schiefelbein Fuenzalida, Ernesto, 1934- | Simmons, John [coaut.].

Material type: Text Text; Literary form: Not fiction Publication details: Ottawa : IDRC, 1981Availability: Items available for reference: Disponible (Préstamo en sala) (1) . Collection(s): Folletería Call number: LB2838 S2.3.

Ecuaciones diferenciales : con aplicaciones y notas históricas / George F. Simmons, John S. Robertson ; tr. Lorenzo Abellanas Rapun.

by Simmons, George Finlay, 1925- | Robertson, John S [coaut.].

Material type: Text Text; Literary form: Not fiction Publication details: Madrid : McGraw-Hill Interamericana, c1993Availability: Items available for loan: 2 . Collection(s): Colección General Call number: QA372 S5.38 1993.

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La vida de las plantas / tr. Alfredo Cruz Herfe.

by Simmons, John.

Series: Introducción a la naturalezaEdition: 4a ed.Material type: Text Text; Format: print ; Literary form: Not fiction Publication details: Madrid : Espasa-Calpe, 1986Availability: Items available for loan: 3 . Collection(s): Infantil Call number: QK35 S5.98 1986.

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