Data sources and licensing

Where the records come from

The catalogue is compiled primarily from first-party records — titles DSBBD publishes or distributes — together with information supplied directly by publishers.

Where a record originates from a third-party source, that is noted on the record itself and the external reference is linked rather than copied.

How records are verified

• Every ISBN is validated against its check digit. Identifiers that fail are held back rather than published.
• ISBN-10 and ISBN-13 forms of the same book are reconciled to a single record, so one book never appears at two addresses.
• Hyphenated ISBN forms are generated from the official ISBN registration-group ranges. Where a range cannot be resolved, only the unhyphenated form is shown rather than a guessed grouping.
• Publisher names are stored exactly as supplied and grouped by a derived key, so a spelling variation never silently becomes a second publisher.

Using this data

Bibliographic facts — ISBN, title, publisher, edition, year, page count — are not creative works and you are welcome to reference them. Cover images and descriptions belong to their publishers and authors; ask them, not us.

For a bulk extract or an API arrangement, email info@dsbbd.com rather than crawling the site.

Corrections

If a record is wrong, tell us. If you are the rights holder for a cover or description you would rather we did not host, say so and it will be removed.