La protección de la naturaleza : principios y problemas

By: Beltrán, EnriqueMaterial type: TextTextLanguage: Spanish Series: Biblioteca Enciclopédica Popular. Tercera Epoca ; 206Publication details: México : México. Secretaría de Educación Pública, 1949Description: 94 páginasSubject(s): ECOLOGIA | PROBLEMAS AMBIENTALES | NATURALEZA
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Libros Libros Biblioteca Central UNNE
574 B453 p ej.1 (Browse shelf (Opens below)) Available 04-000859

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