Describes the physical characteristics and habits of the species of dolphin known as common, saddleback, or Pacific.

Surveys the origin, geological borders, climate, water, plant and animal life, and economic and ecological aspects of the Caribbean Sea.

Surveys the origin, geological borders, climate, water, plant and animal life, and economic and ecological aspects of the Atlantic Ocean.

Surveys the origin, geological borders, climate, water, plant and animal life, and economic and ecological aspects of the Arctic Ocean.

Provides basic information about evergreens and cone-bearing plants, including their structure, economic uses, and the pests and diseases that affect them.