Get book metadata by bibliography keys.

This endpoint provides basic information about books, including URLs, thumbnail links, and preview availability. Supports ISBNs, LCCNs, OCLC numbers, and Open Library IDs.

• bibkeys is expected a comma separated string of ISBNs, LCCNs, etc.
• 'high_priority=true' will attempt to import an edition from a supplied ISBN if no matching edition is found. If not high_priority, then missed bib_keys are queued for lookup on the affiliate-server, and any responses are staged in import_item.

Example call: http://localhost:8080/api/books.json?bibkeys=059035342X,0312368615&high_priority=true

Returns a JSONified dictionary of the form: {"059035342X": { "bib_key": "059035342X", "info_url": "http://localhost:8080/books/OL43M/Harry_Potter_and_the_Sorcerer's_Stone", "preview": "noview", "preview_url": "https://archive.org/details/lccn_078073006991", "thumbnail_url": "https://covers.openlibrary.org/b/id/21-S.jpg" } "0312368615": {...} }