Catherine Fisher Books

Sixteen-year-old Sarah sells her soul to reclaim her family's estate and is given 100 years to atone for their sins, but as the bargain nears its end, modern-day Tom, yearning to attend the private...

Obsidian Mirror

By Catherine Fisher

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The obsidian mirror. Its power is great and terrible. Men have been lost in it, the dead brought back to life through it, and the future annihilated by it. Or this is what will happen unless the mi...

Relic master

By Catherine Fisher

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Parts 3 and 4 of "New York Times"-bestselling author Fisher's dystopian fantasy saga Relic Master are collected in this single volume. Includes "The Hidden Coronet" and "The Margrave."

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.