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Ecuador and its Galápagos islands : the ecotravellers' wildlife guide / David L. Pearson and Les Beletsky ; ill. by Priscilla Barrett...[et al.].
- Academic Press,
- cop. 2000.
- San Diego, CA [etc.] :
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Quantifying sustainable development : the future of tropical economies / ed. by Charles A.S. Hall ; associate ed. Carlos Leon Perez, Gregoire Leclerc.
- Academic Press,
- cop. 2000.
- San Diego, CA [etc.] :