Chris Durlacher Books

Queen Elizabeth's secret agents

By Chris Durlacher, Julian Jones

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Chronicles the history of the world's first secret service.

Spying on the royals

By Paul Elston, Chris Durlacher

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Through declassified documents created as a result of one of the most controversial secret service operations in the history of Great Britain, which involved spying on King Edward VIII and his Amer...

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.