The Big Three

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Identifiers
Dimensions / Weight
Key Features
Spine width
The linear measurement of a book’s spine from one edge to the other, expressed in units such as millimetres or inches. It indicates how thick the binding is and helps determine storage space, handling, and compatibility with shelving or protective covers.
30mm
Hachette Books
Hachette Books is a publishing company that was founded in France in 1826. It is now a subsidiary of the French media company Lagardère Group. Hachette publishes books in a variety of genres, including fiction, non-fiction, biography, autobiography, children's books, and cookbooks.