Mark Alpert Books

An elderly physicist, one of Einstein's last living coleagues, is brutally tortured, then left to die, when he refuses to reveal the long-hidden solution to Einstein's proposed Unified Field Theory...

Extinction

By Mark Alpert, Todd McLaren

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The Silence

By Mark Alpert

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The Six

By Mark Alpert

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The Siege

By Mark Alpert

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Saint Joan of New York

By Mark Alpert

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Crash

By Mark Alpert

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Die Wurfel Gottes

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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.