Ravage, Barbara

Contains articles on bacteria for students in grades five through nine, presented in a variety of formats, and includes illustrations and related activities and research sources.

A biography of the American conservationist, biologist, and author.

Describes the appearance, characteristics, and behavior of bacteria, the most common lifeform on earth.

Examines the life and work of the determined, forward-thinking inventor, who held more than three hundred patents by the time he died.