مؤلف: Peter R. Last

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1 كتب إلكترونية بواسطة Peter R. Last

Marcelo R. de Carvalho & Peter R. Last: Rays of the World
Rays are among the largest fishes and evolved from shark-like ancestors nearly 200 million years ago. They share with sharks many life history traits: all species are carnivores or scavengers; all re …
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