A photographic guide to 536 species of plant galls found west of the RockiesBeautiful and bizarre, plant galls are growths of various shapes, sizes, and colors produced in response …
An accessible field guide to more than 500 of the most commonly found spider species in North AmericaOf the more than 49,000 species of spider worldwide, some 4,000 are in North …
An acclaimed illustrated guide to the world's carnivores--now in an expanded and thoroughly updated new editionThis is an expanded and fully revised new edition of a highly …