Sonja Lamut Books

Counting cows

By Woody Jackson

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Count black and white cows backward from ten to zero.

Counting cows

By Woody Jackson

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And the cow said moo

By Mildred Phillips

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Too Noisy!

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Hardly able to sleep in a house of creaky floors, squeaky doors, and windows that go bang-bang, a discontented old man learns to appreciate his home after a temporary co-residence with a goat...

King Big Wig

By Portia Aborio

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Numbers My Turn Books

By Sonja Lamut, Songa Lamut

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Fluttery Butterflies Glitter Tattoos

By Sonja Lamut

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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.