Ellery Queen Books

The Greek Coffin Mystery

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From A to Z, the Penguin Drop Caps series collects 26 unique hardcovers—featuring cover art by Jessica HischeIt all begins with a letter. Fall in love with Penguin Drop Caps, a new series of twenty...

The Tragedy of Errors Others

By Ellery Queen

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Ellery Queen's Book of Mystery Stories

By Ellery Queen

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The Fourth Side of the Triangle

By Ellery Queen

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And on the Eighth Day

By Ellery Queen

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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.