Elfed Charles Books

WJEC AS Chemistry: Study And Revision Guide

By Blake, Peter, Charles, Elfed, Foster, Kathryn, Peter Blake, Elfed Charles, Welsh Joint Education Committee., Blake, Peter (Examiner For A Level Chemistry), Kathryn Foster, Charles, Elfed, Foster, Kathryn

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Endorsed by WJEC, and written by a team of experienced senior examiners this is the only study and revision guide that precisely matches the WJEC AS Chemistry course. It contains essential course n...

WJEC Chemistry For As Level Student Book

By Peter Blake, Elfed Charles, Kathryn Foster, Peter Blake

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Wjec Chemistry For As: Study And Revision Guide

By Peter Blake, Elfed Charles, Blake, Peter (Examiner For A Level Chemistry), Kathryn Foster, Kathryn Foster Peter Blake Elfed Charles, Peter Blake (Examiner For A Level Chemistry)

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This Study and Revision Guide is endorsed by WJEC, offering you high quality support you can trust. It provides essential underpinning knowledge, plenty of exam practice and advice on how to impro...

Eduqas Chemistry For A Level Yr 1 AS Stu

By Elfed Charles, Kathryn Foster, Peter Blake

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Eduqas Chemistry A Level Yr 1 Study Rev

By Elfed Charles, Kathryn Foster, Peter Blake

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CBAC UG Cemeg Student Book

By Elfed Charles, Kathryn Foster, Peter Blake, PETER CHARLES, ELFED FOSTER, KATHRYN BLAKE

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WJEC Chemistry For AS Level Student Book: 2nd Edition

By Geoff Tuttle, Elfed Charles, P. Blake, Welsh Joint Education Committee Staff

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CBAC Cemeg Ar Gyfer UG Ail Argraffiad (WJEC Chemistry For AS Level Student Book - 2nd Edition)

By Jonathan Thomas, Elfed Charles, Kathryn Foster, Peter Blake, Lindsay Bromley

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CBAC UG Cemeg Canllaw Astudio Ac Adolygu

By Elfed Charles, Kathryn Foster, Peter Blake, Peter Blake (Examiner For A Level Chemistry), PETER CHARLES, ELFED FOSTER, KATHRYN BLAKE

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Endorsed by WJEC, and written by experienced teachers and examiners, this Study and Revision Guide provides high quality support you can trust.

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.