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