Describes the geography, history, economy, culture, and people of the state of California, and includes ideas for classroom assignments.

In late afternoon the muskrats come out to swim, dive, and eat green water weeds.

Describes the political and social history of Egypt as well as the country's employment conditions, urban life, religion, and culture.

Takes the reader on a tour of the "Keystone State", emphasizing its geography, history, government, and culture.

Takes readers on an interplanetary tour from the sun to the ever-mysterious Mars, and then, thanks to the Voyager missions, to the planets beyond.

Often referred to but rarely read, The Communist Manifesto is one of the great documents of world history. Written by Marx and Engels and published in London in 1848 (in German originally), it presented a totally different view of social and political organization, as revolutionaary as Darwin's On the Origin of Species. The Manifesto's effect on world politics was incalculable, but though it might seem to have been discredited by the late 20th century,...

Contains the most current information about the Earth's only natural satellite, with photographs to provide a close-up look at the Moon.

Introduces the solar system and its nine planets. Includes directions for making two models: one showing relative sizes of the planets and the other, their relative distances from the sun.

An introduction, in brief text and illustrations, to the characteristics and habits of pigs.

Describes how crystals form in nature, how crystals are grown artificially, and how crystals are used in industry. Numerous color photos with text identify the various gemstones.