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Note: click on the number in front of a link to display the full description for the link. You can click on a subject heading to go to the list of full descriptions for that subject.
| 1 | Advanced Book Exchange | |
| 2 | Amazon | |
| 3 | Barnes and Noble | |
| 4 | Book Buyers Outlet | |
| 5 | Alibris | |
| 6 | Borders | |
| 7 | 1 Book Street | |
| 8 | Powells | |
| 9 | Search for Books & Compare Prices | |
| 10 | My Favorite Library Work Tools |
| 15 | ISBN book directory by LinkBaton search | |
| 16 | ISBN explanation | |
| 17 | Library of Congress Command Keyword Search | |
| 18 | ISBN barcodes | |
| 19 | Calculating the check digit for the ISBN | |
| 20 | ISBN.nu |