Laura M. Argys is professor of economics at University of Colorado Denver. She is coeditor, along with Susan Averett and Saul Hoffman, of The Oxford Handbook of Women and the Economy.

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J. J. Arias is an independent author of lesbian romantic fiction. Her books include Guava Flavored Lies, the Goode Girl Lesbian Romance series, and the Dusk Queen series.

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Alfonso Martines Arias is ICREA Research Professor in the department of systems bioengineering of the Universitat Pompeu Fabra in Barcelona. The recipient of numerous awards, he is coauthor of the biology textbook Principles of Development, which was awarded the Royal Society of Biology book prize.

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Cindy N. Ariel, PhD, is a psychologist in Philadelphia, Pennsylvania, with over twenty years of experience working with people dealing with Asperger's syndrome. She is coeditor of Voices from the Spectrum.

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Nir Arielli is professor of international history at the University of Leeds. He is the author of From Byron to bin Laden: A History of Foreign War Volunteers and Fascist Italy and the Middle East. He has also written contemporary political commentary for the Globe Post, Haaretz, and the Conversation.

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David Aries is the author of the Half-Breed Hunter series and The Fractured World.

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Anthony Arillotta is the former boss of the Springfield, Massachusetts, faction of New York City's Genovese crime family.

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Aristotle (384–322 BC) was a Greek philosopher whose best-known works include Metaphysics, Nicomachean Ethics, and Politics.

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Febe Armanios is Associate Professor of History at Middlebury College and the author of Coptic Christianity in Ottoman Egypt.

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John Armbruster has taught American history and government at the middle and high school level for twenty-nine years. Before becoming a teacher, he wrote for public radio and newspapers after graduating from the University of Wisconsin-Madison. He lives on a small farm outside of Viroqua, Wisconsin.

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Jennifer L. Armentrout is the New York Times and USA Today bestselling author of the Covenant series and the Lux series. She writes young adult paranormal, science fiction, fantasy, and contemporary romance, and she also publishes adult romantic fiction, including the Gamble Brothers series, under the pseudonym J. Lynn.

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Fr. Charles Arminjon (1824-1885) was a priest from the town of Chambéry in the French Alps. After years as a seminary professor, Father Arminjon took up the mission of full-time preacher, and he went on to gain great renown for his ability to inspire in his listeners a deeper and more ardent love for Christ.

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