The Gale Encyclopedia of the Unusual and Unexplained
UXL Encyclopedia of World Biography
Reference Guide to World Literature
Industrial Revolution Reference Library
Nonfiction Classics for Students
St. James Encyclopedia of Labor History Worldwide
Great Depression and the New Deal Reference Library
Learning and Memory: Macmillan Psychology Reference Series
Geo-Data: World Geographic Encyclopedia
CDs, Super Glue, & Salsa: How Everyday Products Are Made
Renaissance and Reformation Reference Library