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By Moreno Trujillo, Eulalia..
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343 p. 24cm..
8476981759

Washington, D.C. Organización Panamericana de la Salud | Oficina Sanitaria Panamericana | Oficina Regional de la Organización Mundial de la Salud 2000 .
xx, 283 p. , Translation of: Health and environment in sustainable development. 28 cm..
9275315728

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Buenos Aires : Magisterio del Río de la Plata, 1999 .
111 pages : 22 cm..
9505502737

Buenos Aires, Argentina Emecé 1991 .
156 p. , Translation of: 50 simple things kids can do to save the earth. 22 cm..
9500410834 | 9789500410830