Jenny Clark Books

GCSE Information and Communication Technology

By Liz Hankin, Jenny Clark

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Third Sector Skills Research 2008

By Clark Jenny Jochum Veronique

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Becoming a GovCon Expert

By Jenny Clark, Russ Barnes, Joshua P. Frank

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Becoming a GovCon Expert Learn the fundamental strategies for winning government contracts. Six of the nation's top government contracting experts share essential strategies for doing business with...

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.