Lawrence J. Epstein Books

The Harvard Medical School Guide to a Good Night's Sleep

By Steven Mardon, Lawrence Epstein

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The Basic Beliefs of Judaism A Twenty first Century Guide to a Timeless Tradition

By Lawrence J. Epstein

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Questions and answers on conversion to Judaism

By Lawrence J. Epstein

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Mixed nuts

By Lawrence J. Epstein

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Political folk music in America from its origins to Bob Dylan

By Lawrence J. Epstein

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"Musicians sang with fierce moral voices as they tried to relieve human suffering and transform an uncaring society. Many produced work in the midst of personal failure and troubled relationships,...

George Burns

By Lawrence J. Epstein

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"This all-inclusive biography explores George Burns' career against the backdrop of American entertainment history in the 20th century. His loves, his close friendship with Jack Benny, his rivalry...

At the Edge of a Dream

By Lawrence J. Epstein

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Samuel Goldwyn

By Lawrence J. Epstein

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Zion's call

By Lawrence J. Epstein

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Zion's call

By Lawrence J. Epstein

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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.