World nature encyclopedia

Describes the geographical features, climate, and plants and animals of the Arctic with emphasis on their interrelationship.

Describes the plant and animal life of southern Africa and its interaction with the environment.

Describes the plant and animal life of India and its interaction with the environment.

Describes the plant and animal life of western Asia and its interaction with the environment.

Discusses the plant and animal life of the northeastern area of the North American continent and its interaction with the environment.