Un tratado cient fico que describe la diversidad de animales en la naturaleza y su relaci n con el medio ambiente. Con ilustraciones detalladas y un lenguaje accesible, este libro es una obra esencial para estudiantes y aficionados a la zoolog a. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States...
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History