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1.
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La conservation de la fertilité des sols

by Deloye, M.

Series: Techniques Agricoles MéditerranéennesEdition: 2a ed.Material type: Text Text; Format: print Language: French Publication details: Paris : La Maison Rustique, c1958Availability: Items available for loan: Biblioteca Central UNNECall number: 631.4 D361 c 3 ej.1 (1).

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2.
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El petroleó verde (alimentos- energía-alimentos) : utilización de la energía solar a través de la biomasa

by Molina, Jorge Samuel, 1919-1998 [???].

Material type: Text Text; Format: print Language: Spanish Publication details: Buenos Aires : Orientación Gráfica Editora, 2018Availability: Items available for loan: Biblioteca Central UNNECall number: 631.95 M722 ej.1 (1).

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