identification

A pocket guide which identifies specimens of rocks, minerals, and gems, explains their economic importance and describes their uses.

Provides an introduction to patterns of forest ecology, looks at each of the major forest types of eastern North America, examines changes that occur as abandoned fields turn into forests, features background on the process of adaptation and natural selection, and describes forest changes in each of the four seasons.

Contains illustrations and descriptions of over three hundred families of insects, noninsect hexapods, crustaceans, arachnids, and myriapods; and includes general information about the life cycles, sensory systems, habitats, and behaviors of insects and other arthropods.

How to attract, identify, and feed birds in the yard.

Describes 1035 species and subspecies of shells, with illustrations.

A field guide to the animals commonly found under stones, logs, and other objects resting on the ground. Each animal's description is accompanied by a map showing that animal's range within the United States.

Brief text and color illustrations describe 400 tropical and subtropical plants of exceptional beauty. Includes a glossary, a list of botanical gardens and a list of plant families.

Provides identification information and color photographs of 544 birds of western North America.