Biel, Timothy L

Identifies different types of spiders, describing physical characteristics, habits, and habitats.

Discusses the physical description, habits, behavior, and future of owls, using numerous pictures.

Discusses the physical description, habits, behavior, and future of various kinds of tigers, using numerous pictures.

Examines the Challenger disaster from a scientific and historic perspective and discusses its effect on the space shuttle program.

Discusses feudalism, the system of government based on ownership of land, as it was practiced in Europe in the Middle Ages.

Gives an overview of the history of the Crusades during the Middle Ages with a focus on documentation and primary source quotations.

Describes the physical characteristics, behavior, habitat, infancy, and future of the polar bear.

Identifies many types of turtles, describing physical characteristics, habits, and habitats.

Examines the political, cultural, and military aspects of the conflict that tragically divided the United States in the mid-nineteenth century.

Identifies different types of spiders, describing physical characteristics, habits, and habitats.