Edward M. Erdelac Books

Buff tea

By Edward M. Erdelac

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Terovolas

By Edward M. Erdelac

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"The personal papers of the enigmatic Professor Abraham Van Helsing are collected and presented for the first time by his longtime colleague and defender, Dr. John Seward. Texas, 1891 Following the...

Knight with Two Swords

By Edward M. Erdelac

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Merkabah Rider

By Edward M. Erdelac, M. Wayne Miller

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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.