encyclopedias

Volume five of a nine-volume encyclopedia that presents profiles of 193 countries of the world, arranged alphabetically from Afghanistan to Zimbabwe. Each entry is divided into thirty-five standardized sections on topics like agriculture, education, and climate.

Volume two of a nine-volume encyclopedia that presents profiles of 193 countries of the world, arranged alphabetically from Afghanistan to Zimbabwe. Each entry is divided into thirty-five standardized sections on topics like agriculture, education, and climate.

Volume three of a nine-volume encyclopedia that presents profiles of 193 countries of the world, arranged alphabetically from Afghanistan to Zimbabwe. Each entry is divided into thirty-five standardized sections on topics like agriculture, education, and climate.

Volume one of a nine-volume encyclopedia that presents profiles of 193 countries of the world, arranged alphabetically from Afghanistan to Zimbabwe. Each entry is divided into thirty-five standardized sections on topics like agriculture, education, and climate.

Contains entries that provide biographical information about twenty-four men and women who were influential in bringing about social change in countries throughout the world; and features profiles of one organization also engaged in the struggle. Arranged alphabetically from G-to-M.

Contains entries that provide biographical information about twenty-three men and women who were influential in bringing about social change in countries throughout the world; and features profiles of two organizations also engaged in the struggle. Arranged alphabetically from N-to-Z.

Profiles over 1,200 DC Comics characters, offering information on their first appearances in comics history and the key components of their backstories and how they became heroes or villains.

Contains more than two-hundred cross-referenced entries and thirteen essays on topics that affect global health, industry, and the environment, covering algae, bacteria, food-borne illness, influenza, AIDS, bioterrorism, sanitation, and other related topics, and includes classifications of bacteria and archaea, a breakdown of human diseases caused by mircroorganisms, and other resources.

Contains sixty-nine alphabetically arranged entries that provide information about culture and society in the ancient world, discussing agriculture, building techniques, diet, festivals, language, transportation, writing, and other topics, and including over 250 photographs and maps.

Contains alphabetically arranged entries that provide information on key principles, laws, theories, hypotheses, and concepts in the history of the natural sciences, including physics, chemistry, biology, astronomy, geology, and mathematics.