Robin Kerrod Books

Comets and meteors as omens of death and destruction - Heads and tales of comets - Nucleus of a comet - Origins and orbits - Meteoroids - Meteorites - Mini-planets - Asteroid belt - Near-Earth obje...

Sun

By Robin Kerrod

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Describes the characteristics of the sun, including its origins, composition, and surface features, its place in the solar system, and its importance to life on earth.

Stars and galaxies

By Robin Kerrod

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Night Sky Looking at Stars

By Robin Kerrod

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Comets and Meteors Our Solar System

By Robin Kerrod

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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.