Robert Justin Goldstein Books

"After joining a tiny and insignificant extreme left-wing group, the Socialist Workers Party (SWP), in the 1930s, Kutcher was drafted shortly before American entry into World War II. He saw frequen...

Discrediting the Red Scare

By Robert Justin Goldstein

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Political Repression in 19th Century Europe

By Robert Justin Goldstein

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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.