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