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A Field Guide to Western Reptiles and Amphibians: Field Marks of All Species in Western North America, Includung Baja California (Peterson Field Guide Series)
A Field Guide to Western Reptiles and Amphibians Field Marks of All Species in Western North America Includung Baja California - Peterson Field Guide Series Author:Robert C. Stebbins This guide describes 244 species plus 260 subspecies, includingthe key features needed to identify them. The 600 illustrations show details of anatomy, reproduction, scale arrangement, and life stages. Full range information is given in 200 maps.