The Sixties in America Reference Library
Encyclopedia of Espionage, Intelligence and Security
Encyclopedia of the Great Depression
Encyclopedia of Lesbian, Gay, Bisexual and Transgender History in America
Encyclopedia of Children and Childhood: In History and Society
Encyclopedia of Russian History
Chemistry: Foundations and Applications
U.S. Immigration and Migration Reference Library
War in the Persian Gulf Reference Library: From Operation Desert Storm to Operation Iraqi Freedom
Encyclopedia of Irish History and Culture
Learning and Memory: Macmillan Psychology Reference Series
The Gale Encyclopedia of the Unusual and Unexplained
Junior Worldmark Encyclopedia of Physical Geography