encyclopedias, juvenile

Could there be life on other planets? How close is the nearest black hole? Will humans ever set foot on Mars? Find out the answers in this . . . reference guide.

Provides facts and details on every state in the U.S., including the District of Columbia and U.S. dependencies.

Contains articles that provide information on significant people, events, and ideas in the history of the United States, arranged chronologically with illustrations, maps, and diagrams.

Presents alphabetized profiles of the United States, covering Nevada through South Dakota, providing geographic, demographic, economic, and social information in thirty-nine categories as well as maps, flags, photos, bibliographies, and a glossary.

Presents alphabetized profiles of the United States, Tennessee to Wyoming, as well as Washington, D.C., Puerto Rico, the Pacific and Caribbean territories, and the U.S. as a whole, providing geographic, demographic, economic, and social information, and includes bibliographies, a glossary, and a cumulative index.

Presents alphabetized profiles of the United States, covering Alabama through Illinois, providing geographic, demographic, economic, and social information in thirty-nine categories as well as maps, flags, photos, bibliographies, and a glossary.

Presents alphabetized profiles of the United States, covering Indiana through Nebraska, providing geographic, demographic, economic, and social information in thirty-nine categories as well as maps, flags, photos, bibliographies, and a glossary.

Presents alphabetized articles on American social indicators of the twentieth century, containing time lines, statistical charts, selected bibliographies, and hundreds of historical photos. This volume covers "Advertising and Consumerism" through "Environment.".

Presents alphabetized articles on American social indicators of the twentieth century, containing time lines, statistical charts, selected bibliographies, and hundreds of historical photos. This volume covers "Ethnic Minority Groups" through "Leisure.".

Presents alphabetized articles on American social indicators of the twentieth century, containing time lines, statistical charts, selected bibliographies, and hundreds of historical photos. This volume covers "Morality" through "Religion and American Life.".