Encyclopedia of World Biography: 2005 Supplement
Psychologists and Their Theories For Students
Checks and Balances: The Three Branches of the American Government
Early Civilizations in the Americas
The Sixties in America Reference Library
Encyclopedia of Espionage, Intelligence and Security
Encyclopedia of Children and Childhood: In History and Society
Encyclopedia of Russian History
Chemistry: Foundations and Applications
Encyclopedia of Irish History and Culture
U.S. Immigration and Migration Reference Library
War in the Persian Gulf Reference Library: From Operation Desert Storm to Operation Iraqi Freedom
Encyclopedia of World Biography: 2010 Supplement
The Gale Encyclopedia of the Unusual and Unexplained
UXL Encyclopedia of World Biography