21.
 |  | Title: Experiment Central: Understanding Scientific Principles Through Projects by John T. Tanacredi, John Loret, UXL ISBN: 0787628921 Publisher: U*X*L Pub. Date: April, 2000 List Price: $165.00 Amazon.com Price: $165.00 |
22.
 |  | Title: U¥X¥L Biographies 2.0 by UXL ISBN: 0787628794 Publisher: U*X*L Pub. Date: October, 1998 List Price: $400.00 Amazon.com Price: $400.00 |
23.
 |  | Title: American Civil War Reference Library Cumulative Index by Lawrence W. Baker, Kevin American Civil War Hillstrom, UXL ISBN: 0787638196 Publisher: U*X*L Pub. Date: April, 2000 List Price: $5.00 Amazon.com Price: $5.00 |
24.
 |  | Title: American Civil War Primary Sources (American Civil War Reference Library) by Kevin Hillstrom, Laurie Collier Hillstrom, Lawrence W. Baker, UXL ISBN: 0787638242 Publisher: U*X*L Pub. Date: December, 1999 List Price: $58.00 Amazon.com Price: $58.00 |
25.
 |  | Title: World War II Biographies (World War II Reference Library) by Kelly King Howes, Christine Slovey, UXL ISBN: 0787638951 Publisher: U*X*L Pub. Date: August, 1999 List Price: $58.00 Amazon.com Price: $58.00 |
26.
 |  | Title: American Civil Rights Almanac: African Americans Asian Americans (Uxl American Civil Rights Reference Library) by Phillis Engelbert, UXL ISBN: 078763171X Publisher: U*X*L Pub. Date: July, 1999 List Price: $82.00 Amazon.com Price: $82.00 |
27.
 |  | Title: American Civil Rights Biographies: Biographies (American Civil Rights Reference Library) by Phillis Engelbert, Betz Des Chenes, UXL ISBN: 0787631736 Publisher: U*X*L Pub. Date: July, 1999 List Price: $58.00 Amazon.com Price: $58.00 |
28.
 |  | Title: Sick! Diseases and Disorders, Injuries and Infections by David E. Newton, Donna Olendorf, Christine Jeryan, Karen Boyden, UXL ISBN: 0787639222 Publisher: U*X*L Pub. Date: February, 2000 List Price: $185.00 Amazon.com Price: $185.00 |
29.
 |  | Title: Slavery Throughout History Biographies: Biographies (Slavery Through History Reference Library) by Theodore L. Sylvester, Peggy Saari, UXL ISBN: 0787631779 Publisher: U*X*L Pub. Date: January, 2000 List Price: $58.00 Amazon.com Price: $58.00 |
30.
 |  | Title: Westward Expansion: Primary Sources by Tom Pendergast, Sara Pendergast, Christine Slovey, UXL ISBN: 0787648647 Publisher: U*X*L Pub. Date: October, 2000 List Price: $58.00 Amazon.com Price: $58.00 |