John H. Frykman Books

Making the Impossible Difficult

By John Frykman, Thorana Nelson

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A new connection

By John H. Frykman

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The hassle handbook

By John H. Frykman

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Strategies for teenagers and young adults, either still living with their parents or just leaving home, in dealing with the hassles or problems which impede the desired direction of their lives.

A New Connection

By John Frykman, John H. Frykman

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New Hassle Handbook

By John Frykman, Debbie Heimowitz, Alex Hoyt, Zoe Loza

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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.