A detailed reference work on the nine genera and their species in the subfamily Viperinae. Each account is based on a review of the world literature and include

THE INSTANT NEW YORK TIMES BESTSELLER "Sims’s vivid portrait of Trump shrewdly balances admiration with misgivings, and his intricate, engrossing accounts of

Pit vipers are some of the most feared and deadly venomous snakes in the world. Learn about these fascinating creatures and how they use heat-sensing pits to hu

Ideal for today's young investigative reader, each A True Book includes lively sidebars, a glossary and index, plus a comprehensive "To Find Out More" section l