Product Description: People have always been xenophobic, but an explicit philosophical and scientific view of human racial difference only began to emerge during the modern period. Why and how did this happen? Surveying a range of philosophical and natural-scientific texts, dating from the Spanish Renaissance to the German Enlightenment, Nature, Human Nature, and Human Difference charts the evolution of the modern concept of race and shows that natural philosophy, particularly efforts to taxonomize and to order nature, played a crucial role...read more

Two hundred twelve species of reptiles and amphibians are described and illustrated in color

Product Description: This comprehensive key for identifying specimens of amphibians and reptiles in the U.S. and Canada - the first since 1983 - incorporates the wealth of scientific findings generated by molecular systematics (the study of DNA to determine genetic relationships) and simplifies identification by making geographic origin a leading factor...read more (view table of contents, read Amazon.com's description)

(view table of contents)

Two hundred twelve species of reptiles and amphibians are described and illustrated in color

Two hundred twelve species of reptiles and amphibians are described and illustrated in color

(view table of contents)

Distribution maps and illustrations showing the snakes no less than one-third of their actual sizes accompany descriptions of the identifying characteristics of all United States species

Provides information on all species and subspecies of crocodilians, turtles, lizards, snakes, salamanders, toads, and frogs