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