Describes the physical characteristics, habits, and natural environment of monkeys and apes.

Describes the history, language, social classes, customs, culture, religion, and warfare of the ancient Central American civilization of the Mayas.

Describes the physical characteristics and habits of the Monarch, the only butterfly to migrate for the winter.

An introduction to the five fresh-water lakes that contain one-fifth of the earth's standing fresh water.

Describes the general characteristics of comets and gives a brief history of Halley's comet discussing its expected reappearance in late 1985-early 1986.

A guide to caring for cats as pets, which includes descriptions of other members of the cat family.

Shows how the ever-growing tide of refuse threatens the environment and wastes resources, and how recycling helps in conservation efforts.

Describes different types of automobiles and their purposes and discusses automobile design and other related topics such as gasoline, mileage, and safety.

A history of the buffalo/bison in this country, discussing its behavior and population today.

A brief history of the Hopi Indians describing their customs, religious beliefs, interactions with other tribes, and the changes modern civilization has brought to their traditional way of life.