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Free eBooks by ISBN

After reflecting on the coming demise of xISBN, we decided to add an endpoint for free ebooks to the unglue.it API. The API documentation is at https://unglue.it/api/help With an API key, you can check if there’s a free ebook for any ISBN. ISBNs can be 10 or 13 digits, and can include dashes. This service […]

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