Joseph Helmreich Books

Warring parents wounded children and the wretched world of child custody

By Joseph Helmreich

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The return

By Joseph Helmreich

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"During a live television broadcast on the night of a lunar eclipse, renowned astrophysicist Andrew Leland is suddenly lifted into the sky by a giant spacecraft and taken away for all to see. Six y...

Warring Parents Wounded Children and the Wretched World of Child Custody

By Paul Marcus, Joseph Helmreich

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Warring Parents Wounded Children and the Wretched World of Child Custody

By Paul Marcus, Joseph Helmreich

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Return

By Joseph Helmreich

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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.