Helen Palmer Books

El eneagrama en el amor y en el trabajo The Enneagram in Love Work

By Helen Palmer

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RUHUN AYNASI ENNEAGRAMA YANSIYAN INSAN MAN.

By Helen Palmer

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Fish Out of Water

By P. D. Eastman, Helen Palmer

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The Big Purple Book of Beginner Books

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Calling all P. D. Eastman fans! What could be a better than six Beginner Books written and/or illustrated by P. D.—or son Peter—Eastman? Six of them for less than the price of two! The Big Purple B...

I Was Kissed by a Seal

By Helen Marion Palmer

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Set Free from Captivity

By Helen Palmer

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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.