John Lockyer Books

Life in the Ocean Layers

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All the oceans in the world flow together into one big ocean called the World Ocean. There are different zones in the ocean called layers where different animals live and are provided with food. So...

Auf Ins Rheinland

By Jean Ann Naylor, John Lockyer

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The Universe and Other Poems the Red Planet Orbit Double Takes 2 Books in 1

By John Lockyer

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Life in the Ocean Layers

By John Lockyer

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Shosun s Mistake Sails Fluency 4

By John Lockyer

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Tullian Trouble

By John Lockyer

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The astronaut

By John Lockyer

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Spots

By John Lockyer

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I like to eat

By John Lockyer

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Time for sleep

By John Lockyer

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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.