Abacus Reference library
Considered to be the first computer, the abacus has been used since ancient times by a number of civilizations for basic arithmetical calculations. It is still used as a reliable reckoner (and one that does not require electricity or batteries) by merchants and businesspeople in parts of Asia and Africa.
Abortion Reference library
Carole R. McCann
The legal status of abortion in the United States has undergone dramatic shifts, while its practice has been consistent. Throughout
Abstract Expressionism Reference library
A dominant style of art in America from the end of World War II to the early 1960s. Abstract Expressionism
Academia Sinica Reference library
Academia Sinica is the leading academic institution of Taiwan and plays a major role in the field of Chinese studies. Its graduate program recruits students for its eleven PhD programs.
Academic Freedom Reference library
Neil W. Hamilton
The American tradition of academic freedom drew inspiration from the German concept of Lehrfreiheit, the statutory rights of professors
Acquired Immunodeficiency Syndrome in Africa: An Interpretation Reference library
Acquired immunodeficiency syndrome (AIDS) is a fatal disease caused by the slow-acting human immunodeficiency virus (HIV).
Acrobatics Reference library
Chinese acrobatics, called “variety art” (zaji) in Chinese, is one of the most widely viewed types of Chinese cultural performance. The acrobatic acts seen today are packaged for global consumption and are similar to the Western circus, but many of the acts have traditional roots and a long history unique to China.