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	1.	No cover image available "Educación ambiental y conciencia ecológica" : ambiente : cuestión de equilibrio / Esperanza Castillo Romo. by Castillo Romo, Esperanza [autor] Material type: Text; Format: print ; Literary form: Not fiction Publication details: Quito, Ecuador : PETROECUADOR, 1992 Availability: Items available for loan: Biblioteca Yachay Tech (1)Call number: 333.72071 C3528e 1992. Place hold Add to cart (remove)
	2.	Biología de la polución / Kenneth Mellanby, Joandomenech Ros (traductor). by Mellanby, Kenneth Ros, Joandomenech [traductor] Series: Cuadernos de biología Edition: Primera edición. Material type: Text; Format: print ; Literary form: Not fiction Language: Spanish Original language: English Copyright date: Barcelona : Omega ; 1977 Availability: Items available for loan: Biblioteca Yachay Tech (1)Call number: 574.5 M524b 1977. Place hold Add to cart (remove)
	3.	Los desafíos ambientales : reflexiones y propuestas para un futuro sostenible / María Novo, Valeriano Ruiz, Carlos Montes, Ramón Antúnez, Albert Sasson, José Ángel Carrera, Luis Martín, Antonio Ruiz de Elvira, Joandomènec Ros, José María Puig y Mariano Aguirre. by Novo, María Ruiz Valeriano [autor] Montes, Carlos [autor] Antúnez, Ramón [autor] Sasson, Albert [autor] Carrera, José Ángel [autor] Martín, Luis [autor] Ruiz de Elvira, Antonio [autor] Ros, Joandomènec [autor] Puig, José María [autor] Aguirre, Mariano [autor] Edition: Primera Edición. Material type: Text; Literary form: Not fiction ; Audience: General; Language: Spanish Copyright date: Madrid : Universitas S.A. ; 1999 Availability: Items available for loan: Biblioteca Yachay Tech (1)Call number: 363.702 N945d 1999. Place hold Add to cart (remove)
	4.	No cover image available Biological conservation / David W. Ehrenfeld. by Ehrenfeld, David W Series: Modern Biology Edition: First Edition Material type: Text; Format: print ; Literary form: Not fiction Language: English Copyright date: New York : Holt, Rinehart and Winston ; 1970 Availability: Items available for loan: Biblioteca Yachay Tech (1)Call number: 639.9 E334b 1970. Place hold Add to cart (remove)
	5.	Our precarious habitat / Melvin A. Benarde. by Benarde, Melvin A Edition: First Edition. Material type: Text Language: English Copyright date: New York : W.W. Norton & Company Inc , 1970 Availability: Items available for loan: Biblioteca Yachay Tech (1)Call number: 616 B4567o 1970. Place hold Add to cart (remove)
	6.	Evaluación y control de la contaminación / Francisco Alberto Villegas Posada. by Villegas Posada, Francisco Alberto Edition: Primera edición. Material type: Text; Literary form: Not fiction ; Audience: General; Language: Spanish Copyright date: Bogotá : Universidad Nacional de Colombia, EUN ; 1995 Availability: Items available for loan: Biblioteca Yachay Tech (1)Call number: 333.714 V732e 1995. Place hold Add to cart (remove)
	7.	Community structure and the niche / Paul S. Giller. by Giller, Paul S Series: Outline Studies in Ecology Edition: First Edition. Material type: Text Language: English Copyright date: London : Chapman and Hall ; 1984 Availability: Items available for loan: Biblioteca Yachay Tech (1)Call number: 577 G476c 1984. Place hold Add to cart (remove)