Richard Calder Books

Dead Girls

By Richard Calder

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Dead Things

By Richard Calder

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Dead girls

By Richard Calder

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In the 21st Century a dangerous virus appears, turning young women into sexually aggressive killers, and society reacts by exterminating them. A young Englishman flees with an infected woman to Tha...

Dead girls

By Richard Calder

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Dead boys

By Richard Calder

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Dead things

By Richard Calder

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Cythera

By Richard Calder

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Dead Girls, Dead Boys, Dead Things

By Richard Calder

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Dead Boys

By Richard Calder

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The Twist

By Richard Calder

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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.