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		No cover image available Elementos de cosmografía : escritos para los alumnos de instrucción primaria superior by León, Luis G, 1866-1913. Series: Instrucción primaria superiorEdition: 3a. EdiciónMaterial type: Text; Literary form: Not fiction ; Audience: Primary; Language: Spanish Publication details: México : Librería de Ch. Bouret, 1902Online access: Click here to access online Availability: Items available for loan: 1 . Items available for reference: Disponible (Previa cita) (1) . Collection(s): Colección Libros de Texto GEI/UPN Call number: QB61. Place hold
		No cover image available Elementos de física y meteorología : primer año, primer semestre / por Luis G. León. by León, Luis G, 1866-1913. Material type: Text; Format: print ; Literary form: Not fiction Publication details: México : Gallegos, Hnos., 1899Availability: Items available for reference: Disponible (Previa cita) (1) . Collection(s): Fondo Reservado de libros Call number: QC21.2 L4.3 1899.
		No cover image available Elementos de fisiologia é higiene : segundo año, primer semestre by León, Luis G, 1866-1913 \| Crespo, Altagracia. Material type: Text; Literary form: Not fiction ; Audience: Adolescent; Language: Spanish Publication details: México : Imprenta y librería de Aguilar é hijos, 1897Online access: Click here to access online Availability: Items available for loan: 1 . Items available for reference: Disponible (Previa cita) (1) . Collection(s): Colección Libros de Texto GEI/UPN Call number: QP39 . Place hold
		No cover image available Elementos de geografía y educación cívica : para los alumnos de segundo año de educación primaria elemental / por Luis G. León by León, Luis G, 1866-1913. Material type: Text; Format: print ; Literary form: Not fiction Publication details: México : Vda. de Ch. Bouret, 1911Availability: Items available for reference: Disponible (Previa cita) (1) . Collection(s): Fondo Reservado de libros Call number: LB1583 M6.2 L4.3.
		No cover image available Elementos de higiene y medicina doméstica : escritos para uso de los alumnos del segundo año de instrucción primaria superior. (Segundo semestre) by León, Luis G, 1866-1913. Series: Instrucción primaria superiorMaterial type: Text; Literary form: Not fiction ; Audience: Adolescent; Language: Spanish Publication details: México : Librería de Ch. Bouret, 1899Online access: Click here to access online Availability: Items available for loan: 1 . Items available for reference: Disponible (Previa cita) (1) . Collection(s): Colección Libros de Texto GEI/UPN Call number: RA440. Place hold
		No cover image available Física para los niños by León, Luis G, 1866-1913. Series: Biblioteca InfantilEdition: 3a. EdiciónMaterial type: Text; Literary form: Not fiction ; Audience: Primary; Language: Spanish Publication details: México ; París : [Librería] de la Vda. de C. Bouret, 1908Online access: Click here to access online Availability: Items available for loan: 1 . Items available for reference: Disponible (Previa cita) (1) . Collection(s): Colección Libros de Texto GEI/UPN Call number: LB1593. Place hold
		No cover image available Física para los niños by León, Luis G, 1866-1913. Material type: Text; Literary form: Not fiction ; Audience: Primary; Language: Spanish Publication details: México : Librería de Ch. Bouret, 1901Online access: Click here to access online Availability: Items available for loan: 1 . Items available for reference: Disponible (Previa cita) (1) . Collection(s): Colección Libros de Texto GEI/UPN Call number: LB1593. Place hold
		No cover image available Física sin aparatos : para la escuela primaria, elemental y superior by León, Luis G, 1866-1913. Series: Biblioteca de vulgarización científicaMaterial type: Text; Literary form: Not fiction ; Audience: Pre-adolescent; Language: Spanish Publication details: México : Librería de la Vda. de Ch. Bouret, 1906Online access: Click here to access online Availability: Items available for loan: 1 . Items available for reference: Disponible (Previa cita) (1) . Collection(s): Colección Libros de Texto GEI/UPN Call number: QC21.2 . Place hold
		No cover image available Química para los niños by León, Luis G, 1866-1913. Edition: 3a. edición.Material type: Text; Literary form: Not fiction Language: Spanish Publication details: México : Librería de la Vda. de Ch. Bouret, 1913Online access: Click here to access online Availability: Items available for loan: 1 . Items available for reference: Disponible (Previa cita) (1) . Collection(s): Colección Libros de Texto GEI/UPN Call number: QD31. Place hold
		No cover image available Química popular by León, Luis G, 1866-1913. Material type: Text; Literary form: Not fiction Language: Spanish Publication details: México : Librería de Ch. Bouret, 1900Online access: Click here to access online Availability: Items available for loan: 1 . Not available: Checked out (1). Collection(s): Colección Libros de Texto GEI/UPN Call number: QD31. Place hold
		No cover image available Química popular / Luis G. León by León, Luis G, 1866-1913. Material type: Text; Format: print ; Literary form: Not fiction Publication details: México : Librería de Ch. Bouret, 1907Availability: Items available for reference: Disponible (Previa cita) (1) . Collection(s): Fondo Reservado de libros Call number: QD31 L4.6 1907.
		No cover image available Tratado de fisiología e higiene / Luis G. León by León, Luis G, 1866-1913. Material type: Text; Format: print ; Literary form: Not fiction Publication details: México : Librería de Ch. Bouret, 1903Availability: Items available for reference: Disponible (Previa cita) (2) . Collection(s): Fondo Reservado de libros Call number: QP31 L4.8 1903.
		No cover image available Tratado de fisiología e higiene by León, Luis G, 1866-1913. Material type: Text; Literary form: Not fiction Language: Spanish Publication details: México : Librería de Ch. Bouret, 1899Online access: Click here to access online Availability: Items available for loan: 1 . Items available for reference: Disponible (Previa cita) (1) . Collection(s): Colección Libros de Texto GEI/UPN Call number: QP31. Place hold
		No cover image available Tratado de mineralogía y botánica by León, Luis G, 1866-1913. Edition: Quinta edición.Material type: Text; Literary form: Not fiction Language: Spanish Publication details: México : Librería de la Vda. de Ch. Bouret, 1910Online access: Click here to access online Availability: Items available for loan: 1 . Items available for reference: Disponible (Previa cita) (1) . Collection(s): Colección Libros de Texto GEI/UPN Call number: LB1660. Place hold
		No cover image available Tratado elemental de floricultura y horticultura by León, Luis G, 1866-1913. Edition: Segunda edición.Material type: Text; Literary form: Not fiction Language: Spanish Publication details: México : Librería de la Vda. de Ch. Bouret, 1909Online access: Click here to access online Availability: Items available for loan: 1 . Items available for reference: Disponible (Previa cita) (1) . Collection(s): Colección Libros de Texto GEI/UPN Call number: SB421. Place hold