Manuela Olten Books

Muss mal Pipi

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Eine witzige Klo-Geschichte: Dass Windeln für Babys sind, weiss ja wohl jeder. Aber der kleine Erzähler ist schon so gross, dass er alleine aufs Klo gehen kann. Das ist aber nicht immer so einfach...

Muss mal Pipi

By Manuela Olten

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I Know Something You Don t Know

By Brigitte Raab

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Mama I can t sleep

By Brigitte Raab

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When a little girl who cannot fall asleep asks her mother for help and her mother describes the way different animals sleep, the girl tries the methods one after another and only finds herself more...

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.