encyclopedias

Designed for high-school students and lay adults, this collection of entries covers major areas of science including: biology, genetics, microbiology, astronomy, chemistry, physics, engineering, technology, geology, weather, archaeology, psychology, mathematics, and medicine, and provides readers with a wide range of up-to-date, relevant, and accurate information.

Details current geographical, social, and political data, historical narrative, and statistical information on the 50 states, District of Columbia, Puerto Rico, Caribbean and Pacific dependencies of the U.S. Each entry consistently contains data on 50 rubrics. Maps, tables, flags and official state seals included.

Provides detailed information on mental disorders and conditions. Also features entries for prescription, alternative and over-the-counter drugs, as well as the various therapies used to treat mental disorders.

How is race defined and perceived in America today, and how do these definitions and perceptions compare to attitudes 100 years ago ... or 200 years ago? This four-volume set addresses many topics related to race in the United States.

This 3-volume set is written for readers at grade 7 and higher and covers addictions, causes, and treatments of particular importance to adolescents. Articles on the nature of addiction and its roots include advertising, genetics, families, and personal problems.

This resource book offers broad, comprehensive coverage of the animal kingdom, ranging from the simple -- sponges and corals -- to the complex -- mammals. Animals are grouped by major classifications: sponges; corals; jellyfishes; segmented worms; crustaceans and mollusks; insects; fishes; amphibians; reptiles; birds; and mammals.

Provides alphabetized articles, from Avalanche to El Nin?o, on topics related to weather and natural disasters, covering the science behind types of disasters and presenting firsthand accounts of events; and including a list of resources as well as a comprehensive index, a chronology, and a glossary.

Contains instructions for science projects referenced in volumes one through nine of "Rourke's World of Science Encyclopedia, " and includes a cumulative index and glossary.

A science encyclopedia designed for middle school students, examining topics related to mathematics, explaining what mathematics is, and covering numbers, sets, ratios, statistics, algebra, geometry, measurement, and advanced math, with further reading sidebars and illustrations.

A science encyclopedia designed for middle school students, examining topics related to technology, explaining what technology is, and covering agriculture, transportation, electronics, medicine, communications, entertainment, computers, and people who use technology, with further reading sidebars and illustrations.