Patrick Keller Books

Those brave as the skate is

By Patrick Keller

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Time share

By Patrick Keller

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"After a time bending adventure, Ollie Finch was set to go home in his uncle's rocket car time machine when everything went sideways. He's at the center of a maelstrom of paradoxes that threatens t...

Neokonservatismus und amerikanische Aussenpolitik

By Patrick Keller

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9 11

By Birte Christ, Patrick Keller, Michael Butter

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6 Painting Secrets You Never Knew

By Patrick Keller

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Cross Linked Liquid Crystalline Materials

By Patrick Keller, Yang Hong

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Philosophy ANCIENT GREEK PHILOSOPHY GREEK PHILOSOPHY and the MOST IMPORTANT PHILOSOPHERS

By Patrick Keller

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Aussenpolitik und Staatsrason

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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.