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41.
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Recherches chimiques sur la végétation by Saussure, Théod de, 1767-1845. Material type:  Text Language: fr Publisher: Paris : Gauthier-Villars, 1957Availability: Items available for loan: Biblioteca Central UNNECall number: 631.92 S255 r ej.1 (1).
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42.
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The tropical rain forest by Richards, P. W. Material type: Text Language: en Publisher: Cambridge : Stanford University, 1957Availability: Items available for loan: Biblioteca Central UNNECall number: 631.92 R514 t ej.1 (1).
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43.
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Ecología vegetal by Oosting, Henry J. Material type: Text Language: Spanish Publisher: Madrid : Aguilar, c1951Availability: Items available for loan: Biblioteca Central UNNECall number: 631.9 O85 e ej.1 (1).
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44.
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45.
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Ponencias by Universidad Nacional del Nordeste | Reunión Latinoamericana Sobre Rhizobium Resistencia 1974 7 | Universidad Nacional del Nordeste | Facultad de Ciencias Agrarias. Universidad Nacional del Nordeste. Material type: Text Language: Spanish Publisher: Resistencia : Universidad Nacional del Nordeste, [1975]Availability: Items available for loan: Biblioteca Central UNNECall number: 631.84 R444 ej.4 (1).
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46.
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La nutrición de las plantas a través del suelo by Lysenko, Trofim Denisovich, 1898-1976. Material type: Text Language: Spanish Publisher: Moscú : Seljozguiz, 1957Availability: Items available for loan: Biblioteca Central UNNECall number: 631.811 L769 ej.1 (1).
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47.
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Fertilizers and crop production by Van Slyke, Lucius L. Material type: Text Language: en Publisher: New York : Orange Judd Company, 1953Availability: Items available for loan: Biblioteca Central UNNECall number: 631.8 V276 f ej.1 (1).
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48.
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49.
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50.
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51.
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Les engrais by Garrau, J. G. Edition: 2a ed.Material type: Text Language: fr Publisher: Paris : Dunod, 1955Availability: Items available for loan: Biblioteca Central UNNECall number: 631.8 G238 e 2 ej.1 (1).
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52.
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Agenda del salitre : nitrato natural de Chile Edition: 6a ed.Material type: Text Language: Spanish Publisher: Santiago : Corporación de Ventas de Salitre y Yodo de Chile, 1955Availability: Items available for loan: Biblioteca Central UNNECall number: 631.8 A265 d 6 ej.1 (1).
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53.
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54.
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Améliorations agricoles : irrigations by Rolley, Paul. Material type: Text Language: fr Publisher: Paris : J. B. Bailliere, 1953Availability: Items available for loan: Biblioteca Central UNNECall number: 631.67 R749 ej.1 (1).
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55.
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Mecanismos elevadores de agua para riegos by Organización de las Naciones Unidas para la Agricultura y la Alimentación. Material type: Text Language: it Publisher: Roma : Organización de las Naciones Unidas para la Agricultura y la Alimentación, 1956Availability: Items available for loan: Biblioteca Central UNNECall number: 631.67 F686 me ej.1 (1).
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