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This option lets you browse the subject hierarchy and see what items are in each subject category. A simple search will let you search for author, title, publication and year, and advanced search will let you search more fields too. Before you can use the subscription service, or deposit items to the archive, you'll need to register with us. No charge is made for registering or for the use of any service on this archive. This feature allows you to instruct the archive to automatically e-mail you with details of new eprints appearing in the archive.