Jean Leinhauser Books

Crochet Master Class presents 18 crochet techniques taught by some of the world’s best crochet designers and instructors. Each chapter focuses on a different technique, inviting you to dip in, expe...

Seven Days Afghans

By Jean Leinhauser

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7 Day Afghans

By Jean Leinhauser, Barbara Hunter

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The Crochet Yearbook Volume 1 1303

By Jean Leinhauser, Rita Weiss

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A treasury of needlecrafts

By Jean Leinhauser

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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.