Dan Foulder Books

WJEC AS Biology Student Unit Guide: Unit BY1 Basic Biochemistry and Organisation

By Dan Foulder

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WJEC AS biology

By Dan Foulder

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Perfect for revision, these guides explain the unit requirements, summarise the content and include specimen questions with graded answers. Endorsed by WJEC, this full-colour Student Unit Guide pro...

WJEC Eduqas a-level year 2 biology student guide

By Dan Foulder

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WJEC Eduqas a level year 2 biology student guide

By Dan Foulder

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My Revision Notes

By Dan Foulder

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My Revision Notes

By Dan Foulder

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Essential Skills for GCSE Biology Welsh Ed

By Dan Foulder

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Essential Skills for GCSE Combined Science

By Roy White, Nora Henry, Dan Foulder

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Fy Nodiadau Adolygu

By Dan Foulder

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Fy Nodiadau Adolygu

By Dan Foulder

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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.