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21.
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Higiene escolar by Burgerstein, Leo. Edition: 3a ed.Material type:  Text Language: Spanish Publisher: Barcelona : Labor, 1937Availability: Items available for loan: Biblioteca Central UNNECall number: 37 B954 h ej.1 (1).
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22.
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23.
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Prácticas escolares by Seyfert, Richart | González Rivas, Alvaro [tr.]. Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1926Availability: Items available for loan: Biblioteca Central UNNECall number: 37 S519 p ej.2 (1).
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24.
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Orientación profesional by Ruttmann, W. J. Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1926Availability: Items available for loan: Biblioteca Central UNNECall number: 37 R982/1 ej.1 (1).
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25.
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Pedagogía experimental by Lay, Wilhelm August | Ruiz Nanent, Jaime [tr.]. Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1928Availability: Items available for loan: Biblioteca Central UNNECall number: 37 L426 p ej.1 (1).
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26.
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27.
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Derecho canónico by Sehling, E. Material type: Text Language: Spanish Publisher: Barcelona : Buenos Aires, Labor ; 1926Availability: Items available for loan: Biblioteca Central UNNECall number: 348 S456 ej.1 (1).
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28.
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Organización del comercio exterior by Michels, Roberto | Sarto Sánchez, Manuel, 1897 [tr.]. Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1930Availability: Items available for loan: Biblioteca Central UNNECall number: 382 M623 ej.1 (1).
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29.
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Geología by Frech, Fritz. Edition: 3a ed.Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1926Availability: Items available for loan: Biblioteca Central UNNECall number: 55 F851/2 ej.1 (1).
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30.
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Geología by Frech, Fritz. Edition: 3a ed.Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1926Availability: Items available for loan: Biblioteca Central UNNECall number: 55 F851/1 ej.1 (1).
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31.
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Petrografía by Bruhns, W. Edition: 3a ed.Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1928Availability: Items available for loan: Biblioteca Central UNNECall number: 55 B892 p ej.1 (1).
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32.
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Geografía física by Günther, Siegmund, 1848-1923. Material type: Text Language: Spanish Publisher: Barcelona : Labor ; Availability: Items available for loan: Biblioteca Central UNNECall number: 551 G977 ej.1 (1).
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33.
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Grámatica castellana by Moneva y Puyol, Juan, 1871-1951. Edition: 2a ed.Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1925Availability: Items available for loan: Biblioteca Central UNNECall number: 806.0-5 M742 g ej.1 (1).
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34.
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Los negros by Delafosse, Maurice. Material type: Text Language: Spanish Publisher: Buenos Aires : Labor, 1931Availability: Items available for loan: Biblioteca Central UNNECall number: 39 D333 ej.1 (1).
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35.
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La vida en las aguas dulces by Arévalo, Celso. Material type: Text Language: Spanish Publisher: Barcelona : Labor, [1929]Availability: Items available for loan: Biblioteca Central UNNECall number: 57 A678 v ej.1 (1).
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36.
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Los animales prehistóricos by Abel, Othenio, 20/06/1875-04/07/1946. Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1928Availability: Items available for loan: Biblioteca Central UNNECall number: 56 A139 a ej.2 (1).
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37.
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Prehistoria 3 : la edad del hierro by Hoernes, Moritz, 1852-1917. Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1927Availability: Items available for loan: Biblioteca Central UNNECall number: 571 H693/3 ej.1 (1).
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38.
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Prehistoria 2 : la edad del bronce by Hoernes, Moritz, 1852-1917 | Behn, Friedrich | Pericot García, Luis, 1899 [tr.]. Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1926Availability: Items available for loan: Biblioteca Central UNNECall number: 571 H693/2 ej.1 (1).
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39.
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Prehistoria 1 : la edad de la piedra by Hoernes, Moritz, 1852-1917 | Behn, Friedrich. Edition: 3a ed.Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1939Availability: Items available for loan: Biblioteca Central UNNECall number: 571 H693/1 ej.1 (1).
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40.
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Fundamentos filosóficos de la pedagogía by Messer, August Wilhem, 1867-1937 | Rovira Armengol, José [tr.]. Material type: Text Language: Spanish Publisher: Barcelona : Labor, 1927Availability: Items available for loan: Biblioteca Central UNNECall number: 37.01 M584 ej.1 (1).
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