identification

A field guide to trees around the world, each accompanied by a color photograph and a description of key features and points of differentiation.

Contains thirteen essays that provide varying perspectives on issues related to DNA data banks, including the benefits and burdens of DNA databases, governmental intrusion on private information, securing privacy, physical profiles, and more.

Describes and illustrates 278 species and five hundred subspecies of North American turtles, lizards, snakes, amphisbaenids, and crocodilians, and includes range maps.

A field guide to wildflowers for young readers.

An identification guide to over five hundred medicinal plants, with information on the known uses of each plant, line drawings, and color photographs.

A guide to identifying 100 bird species, covering where they live, what they eat, what sounds they make, their scientific names, and sizes.

Provides information about twenty-six species of insects, discussing diet, physical characteristics, and behaviors, and including photographs.

Describes thirty common species of wild flowers from the black-eyed Susan to the Johnny jump-up. Includes activities and scrapbook pages.

Descriptions and identifications of species of seashells from all over the world. Full-color photographs make identification very easy and quick.