El desafío ecológico
By: Ezequiel Ander-Egg.
Edition: 2a ed. corr. y aum.
Publisher: Editorial Universidad Estatal a Distancia
Published: 1985
Place of publication: San José, Costa Rica
Language: spa
Number of pages: 185
Subjects: Ecology.; Pollution -- Environmental aspects.
Notes: Includes bibliographical references.
"Fundación Tinker, Nueva York, E.U.A.; Fundación Acción Ya, San José, Costa Rica; Fundación de Parques Nacionales, San José, Costa Rica, Universidad Estatal a Distancia, Programa de Educación Ambiental."