Mark Hewish Books

Young Scientist Jets Young Scientist

By Mark Hewish

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AIR FORCES WLD Touchstone Books Paperback

By Bill Sweetman, Mark Hewish

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Jets The Usborne Young Scientist Series

By Mark Hewish

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The Young Scientist

By Mark Hewish, Philip Chapman

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The young scientist book of jets

By Mark Hewish

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Presents a history of jet aircraft, discusses how and why they fly, and described types of jet fighters and possible designs of the future.

Know your aircraft

By Mark Hewish

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Discusses the evolution of the airplane from a fragile wooden flying machine to a powerful supersonic aircraft.

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.